Choosing among the best dual-clutch to manual conversion kits starts with one hard limit: these products do not all convert the same kind of vehicle. Three are Tremec TKX packages for Ford small-block builds, while one replaces the dual-mass flywheel in a Cummins Ram that already has a G56 manual transmission. My leading complete-conversion pick is the Speedway Motors TKX 50 oz kit for a compatible Ford build; the 28-balance TKX kit is the match when that balance specification is required. For a Cummins truck already equipped with a G56, the Southeast Clutch solid-flywheel kit addresses a different problem: replacing the factory dual-mass flywheel rather than adding a manual transmission.
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The main tradeoff is application fit versus conversion scope. The Ford TKX kits include the transmission and major installation hardware, but require the correct small-block balance configuration and careful fitment checks. The Cummins kit is a more focused clutch-and-flywheel replacement, not a complete automatic-to-manual swap. I ranked these options by how clearly their listed parts and specifications serve a distinct conversion need, while treating fitment gaps and installation weight as meaningful drawbacks.
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Key Takeaways
- The Southeast Clutch kit replaces a Cummins G56 truck’s dual-mass flywheel; it does not include a manual transmission for an automatic-to-manual swap.
- The Speedway Motors 50 oz and 28-balance TKX kits are separate small-block Ford choices, and the engine’s balance requirement determines which one fits.
- The two 50 oz listings describe similar TKX and dual-disc clutch capacity, but differ in the stated bellhousing, hardware, and installation details.
- All three Ford TKX packages list capacity up to 600 lb-ft and 7,500+ RPM shifts; those figures do not replace checking the exact engine and vehicle fitment.
- The Ford kits weigh about 203–207 pounds, so handling the transmission package and planning installation support are part of the buying decision.
| Speedway Motors Small-Block Ford TKX 5-Speed Transmission and Clutch Conversion Kit, 50 oz Balance |  | Best Overall for a 50 oz small-block Ford TKX conversion | Transmission: Tremec TKX 5-speed manual | Engine compatibility: Small-block Ford | Balance: 50 oz | VIEW LATEST PRICE | See Our Full Breakdown |
| Speedway Motors SBF TKX 5-Speed Transmission and Clutch Conversion Kit, 28-Balance | | Best for a 28-balance small-block Ford | Transmission: Tremec TKX 5-speed manual | Engine compatibility: Ford small-block | Balance: 28 | VIEW LATEST PRICE | See Our Full Breakdown |
| TKX 5-Speed Transmission and Clutch Conversion Kit for Small-Block Ford |  | Best documented package for performance-build details | Transmission: Tremec TKX 5-speed manual | Compatibility: Small-block Ford applications | Clutch: 10.5-inch dual-disc | VIEW LATEST PRICE | See Our Full Breakdown |
| Clutch and Solid Flywheel Conversion Kit for Dodge Ram 2500/3500 5.9L/6.7L Cummins with G56 Manual Transmission |  | Best Cummins dual-mass flywheel replacement | Brand: Southeast Clutch | Vehicle fitment: 2005–2014 Dodge Ram 2500/3500 with 5.9L or 6.7L Cummins, per specification | Transmission compatibility: G56 6-speed manual | VIEW LATEST PRICE | See Our Full Breakdown |
| dual-clutch to manual conversion kit | Transmission | Clutch | Engine compatibility | Balance |
|---|---|---|---|---|
| Speedway Motors Small-Block Fo | Tremec TKX 5-speed manual | Ram Concept 10.5-inch dual-disc | Small-block Ford | 50 oz |
| Speedway Motors SBF TKX 5-Spee | Tremec TKX 5-speed manual | Ram Concept 10.5-inch dual-disc | Ford small-block | 28 |
| TKX 5-Speed Transmission and C | Tremec TKX 5-speed manual | 10.5-inch dual-disc | — | — |
| Clutch and Solid Flywheel Conv | — | — | — | — |
More Details on Our Top Picks
Speedway Motors Small-Block Ford TKX 5-Speed Transmission and Clutch Conversion Kit, 50 oz Balance
I rank this as the best overall because the listing identifies a broad, useful package for a specific job: fitting a Tremec TKX five-speed and clutch into a compatible 50 oz-balance small-block Ford application. It includes the transmission, Ram 10.5-inch dual-disc clutch, steel bellhousing, and ARP hardware, giving a buyer more of the central drivetrain pieces in one package than the Cummins replacement kit, which is not a transmission conversion. The stated 600 lb-ft torque capacity and 7,500+ RPM shift capability also make it the strongest all-around fit here for a performance-oriented Ford build that needs both street manners and substantial capacity.
The dual-disc clutch is described as offering smooth engagement and stock-like pedal effort. That matters because a high-capacity clutch can otherwise make a street car tiring to drive. Compared with the other 50 oz listing, this version spells out the steel bellhousing and ARP fasteners and provides a listed package weight of 203 pounds. The near-identical 207-pound listing includes installation instructions and mentions forged shafts and billet hardware, so a buyer who values those details may prefer that alternative. The two listings appear closely related; I would confirm the exact contents before choosing between them.
The main limitation is fitment. This is not a universal manual swap kit: it is specifically for small-block Ford builds with the correct 50 oz balance requirement. Its 203-pound listed weight also means moving and positioning the transmission package will take suitable equipment and planning. I would select it only after confirming the engine balance, vehicle packaging, and any chassis-specific parts needed beyond the listed major components.
Pros:- Packages a Tremec TKX five-speed with a Ram dual-disc clutch and steel bellhousing.
- Lists ARP hardware alongside the major conversion components.
- States capacity up to 600 lb-ft and shifts above 7,500 RPM.
- Clutch is described as having smooth engagement and stock-like pedal effort.
Cons:- Fitment is limited to compatible small-block Ford applications with 50 oz balance.
- At 203 pounds, the listed package weight makes handling and installation more demanding.
- The closely related 50 oz listing has overlapping specifications, so buyers should verify exact package contents.
Best for: A buyer building a compatible 50 oz-balance small-block Ford who wants the TKX transmission, dual-disc clutch, steel bellhousing, and ARP hardware in one package.
Not ideal for: A Cummins owner, a Ford build requiring 28-balance components, or anyone expecting a universal kit that includes every vehicle-specific installation part.
- Transmission:Tremec TKX 5-speed manual
- Engine compatibility:Small-block Ford
- Balance:50 oz
- Clutch:Ram Concept 10.5-inch dual-disc
- Maximum torque:600 lb-ft
- Maximum shift speed:7,500+ RPM
- Bellhousing and hardware:Steel bellhousing; ARP hardware
- Item weight:203 pounds
- Model number:91029056-50
Our verdict“For a confirmed 50 oz small-block Ford build, I would start here for its clearly stated TKX, clutch, bellhousing, and hardware package.”
Speedway Motors SBF TKX 5-Speed Transmission and Clutch Conversion Kit, 28-Balance
This is the right-fit pick for a 28-balance Ford build, rather than a general alternative to the 50 oz package. It pairs a Tremec TKX five-speed with a Ram Concept 10.5-inch dual-disc clutch, steel bellhousing, fasteners, hardware, and installation instructions. The stated capacity—up to 600 lb-ft and 7,500+ RPM shifts, with support for builds up to 750 horsepower—matches the claims attached to the other Speedway TKX options. Its defining distinction is the listed 28 balance, which should guide the decision before performance figures do.
Compared with the 50 oz kit, this option is preferable only when the engine configuration calls for 28-balance components. A flywheel balance mismatch can make an otherwise well-equipped package the wrong choice, so the similar transmission and clutch specs do not make these kits substitutes for each other. For a buyer whose engine requires the 50 oz version, I would choose the B0FH7PKT8G listing instead; for a 28-balance build, this package avoids selecting by superficial similarity.
The listing includes the main conversion components, but the 203-pound weight is a real workshop consideration. A transmission jack and a planned installation approach are sensible, and some chassis-specific parts may still be needed depending on the vehicle. The product description also does not provide the same detailed component claims found in the other 50 oz listing, such as explicit mention of ARP hardware. I would verify the exact hardware and application coverage with the seller before ordering, especially for a nonstandard chassis or engine combination.
Pros:- Specifies 28 balance, helping distinguish it from the 50 oz Ford packages.
- Includes a Tremec TKX, Ram dual-disc clutch, steel bellhousing, hardware, and instructions.
- Lists capacity up to 600 lb-ft and 7,500+ RPM shifts.
- Clutch is described as offering strong holding power and smooth engagement.
Cons:- Compatibility is limited to suitable Ford small-block applications requiring 28 balance.
- The listed weight of 203 pounds can make installation difficult without proper support.
- The description does not itemize every included fastener or vehicle-specific fitment detail.
Best for: A small-block Ford owner who has confirmed the engine requires 28-balance components and wants a TKX-based manual conversion package.
Not ideal for: A 50 oz-balance Ford build, a Cummins G56 application, or a buyer who needs a light package or a clearly itemized list of every fastener.
- Transmission:Tremec TKX 5-speed manual
- Engine compatibility:Ford small-block
- Balance:28
- Clutch:Ram Concept 10.5-inch dual-disc
- Torque capacity:Up to 600 lb-ft
- Shift capability:7,500+ RPM
- Horsepower support:Up to 750 hp
- Bellhousing:Steel
- Manufacturer part number:91029056-28
Our verdict“I would choose this over the similar 50 oz package only after confirming that the engine specifically calls for 28-balance components.”
TKX 5-Speed Transmission and Clutch Conversion Kit for Small-Block Ford
This Speedway Motors package earns a distinct place for buyers who want a more detailed performance-oriented parts description. Like the other Ford entries, it centers on a Tremec TKX five-speed and 10.5-inch dual-disc clutch, with stated capacity of up to 600 lb-ft and 7,500+ RPM shifts. Its listing also calls out forged shafts, billet hardware, ARP fasteners, and installation instructions. Those details give a builder more to compare when planning a higher-output project than the brief parts summary on the 28-balance listing.
Compared with the 50 oz package ranked first, this one shares the broad TKX and clutch capability but is listed at 207 pounds rather than 203. It also emphasizes instructions and internal or hardware details rather than specifying a balance in the provided product title and specs. That makes it a useful option for a buyer attracted to its build details, but a reason to pause if engine balance is not confirmed. The provided information says small-block Ford; it does not establish that this listing fits every Ford small-block configuration or identify a specific balance version.
I would not let the large torque and RPM claims overshadow fitment verification. A conversion still depends on engine balance, vehicle packaging, and any application-specific parts not named in the supplied listing. At 207 pounds, the package is also the heaviest listed here, so it is less convenient to manage than the 203-pound Speedway options. Compared with the Cummins clutch-and-flywheel kit, this is a much broader transmission conversion, but it is also a more involved installation and is irrelevant to a truck retaining a G56.
Pros:- Includes a Tremec TKX and 10.5-inch dual-disc clutch for a manual conversion.
- Description identifies forged shafts, billet hardware, and ARP fasteners.
- Includes installation instructions and states capacity up to 600 lb-ft.
- Lists 7,500+ RPM shift capability and support up to 750 horsepower.
Cons:- Small-block Ford fitment is broad in the listing, with no balance specification provided.
- The 207-pound listed weight is the heaviest among these packages.
- Buyers may need to confirm exact included parts and vehicle-specific requirements.
Best for: A small-block Ford builder who values the listed installation instructions, forged shafts, billet hardware, and ARP fasteners and will confirm balance and fitment before purchase.
Not ideal for: A buyer who needs a confirmed 28- or 50 oz package without further clarification, or anyone seeking a lighter, simpler clutch-and-flywheel replacement.
- Transmission:Tremec TKX 5-speed manual
- Compatibility:Small-block Ford applications
- Clutch:10.5-inch dual-disc
- Torque capacity:Up to 600 lb-ft
- Maximum shift RPM:7,500+ RPM
- Horsepower support:Up to 750 hp
- Listed components:Forged shafts, billet hardware, ARP fasteners, installation instructions
- Item weight:207 pounds
- Model number:91029056-0
Our verdict“This is a strong candidate when its detailed performance and installation features match the build, but I would confirm balance before treating it as a direct alternative to the 50 oz or 28-balance kits.”
Clutch and Solid Flywheel Conversion Kit for Dodge Ram 2500/3500 5.9L/6.7L Cummins with G56 Manual Transmission
This is the only option here for a Cummins Ram already equipped with a G56 manual transmission. The kit replaces the factory dual-mass flywheel with a solid flywheel and includes a pressure plate, clutch disc, alignment tool, and pilot bearing. That makes it a focused clutch-system change for a truck used for towing, hauling, or other high-torque work—not a complete automatic-to-manual conversion. I rank it below the Ford packages for the article’s broad manual-conversion intent because it does not supply a transmission, but it is the most relevant pick for the specific Cummins use case.
Compared with the Speedway TKX packages, the Southeast Clutch kit is much narrower in scope and tailored to a different drivetrain. It does not list horsepower or shift-RPM claims, nor does it need to: its stated value is the solid-flywheel replacement and the included clutch components for a G56 application. A buyer with a Ford small-block cannot use it, while a Cummins owner who already has the specified manual transmission may find the included alignment tool and pilot bearing helpful when planning the job.
The largest concern is a fitment inconsistency. The product title refers to 2005–2018 vehicles, while the specification says 2005–2014 Dodge Ram 2500/3500 with a 5.9L or 6.7L Cummins and G56. I would not infer later-year fitment from the title alone; confirm the truck year, engine, and transmission with the seller or manufacturer before ordering. The solid flywheel also changes the setup from the OEM dual-mass design, so buyers should understand that this is not simply a factory-style replacement. It is aimed at durability and high-torque use, not at preserving every characteristic of the original assembly.
Pros:- Replaces the OEM dual-mass flywheel with a solid flywheel.
- Designed for compatible Cummins G56 trucks used for towing, hauling, and high-torque work.
- Includes pressure plate, clutch disc, alignment tool, and pilot bearing.
- Provides a focused alternative to buying a complete transmission conversion package.
Cons:- Fits only specified Cummins Ram models with a G56 manual transmission.
- The title and fitment specification disagree about the latest model year.
- Does not include a transmission for an automatic-to-manual conversion.
Best for: A 2005–2014 Ram 2500 or 3500 owner with a 5.9L or 6.7L Cummins and G56 manual who wants to replace the OEM dual-mass flywheel.
Not ideal for: An automatic-transmission owner seeking a complete manual swap, a Ford small-block builder, or a truck owner whose year or drivetrain has not been confirmed.
- Brand:Southeast Clutch
- Vehicle fitment:2005–2014 Dodge Ram 2500/3500 with 5.9L or 6.7L Cummins, per specification
- Transmission compatibility:G56 6-speed manual
- Flywheel type:Solid
- Included components:Pressure plate, clutch disc, solid flywheel, alignment tool, pilot bearing
- Manufacturer part number:05-124SMF-1
- Model:Premium Clutch Flywheel
- Exterior:Machined
- Position:Front
Our verdict“For a confirmed compatible Cummins G56 truck, I would consider this the focused solid-flywheel replacement, but I would resolve the year discrepancy before ordering.”
How We Picked
I ranked these four options around what a buyer is actually trying to change: a dual-mass flywheel in an existing manual Cummins truck, or a broader small-block Ford conversion to a Tremec TKX five-speed. Those are different jobs, so I did not treat the four listings as interchangeable. A kit that is excellent for an already-manual G56 truck cannot serve as a complete manual-transmission conversion for an automatic-equipped Ford.
For the Ford packages, I compared the stated engine balance, clutch type, transmission, torque and shift claims, bellhousing, hardware, and installation information. Balance is a decisive fitment detail, not a minor preference: the 50 oz and 28-balance versions serve different engine configurations. I also gave weight practical attention because packages listed above 200 pounds can complicate handling and installation, especially for a home mechanic without a transmission jack or a helper.
I treated the listed capacity figures as product claims, not a guarantee that every engine combination, driving style, or vehicle installation will be suitable. I also gave credit for included components only where the supplied details identify them. The Cummins listing has a fitment discrepancy: its title says 2018, while the fitment specification ends at 2014. That uncertainty lowers its ranking until the manufacturer or seller confirms the correct application. I prioritized clear application matching, useful scope, and identifiable tradeoffs over broad performance language.
| dual-clutch to manual conversion kit | Engine compatibility |
|---|---|
| Speedway Motors Small-Block Fo | Small-block Ford |
| Speedway Motors SBF TKX 5-Spee | Ford small-block |
| TKX 5-Speed Transmission and C | — |
| Clutch and Solid Flywheel Conv | — |
Factors to Consider When Choosing Best Dual-clutch To Manual Conversion Kits
Before comparing clutch capacity or included hardware, decide whether the project is a complete manual-transmission conversion or a clutch-and-flywheel replacement for a vehicle that is already manual. The Ford kits include a TKX transmission; the Cummins kit does not. Once the job type is clear, the engine balance and transmission fitment narrow the field quickly.
Separate a transmission swap from a flywheel conversion
The phrase “dual-clutch to manual conversion” can describe different work, but the four products here do not perform the same task. The three Speedway Motors listings package a Tremec TKX five-speed conversion for small-block Ford applications. The Southeast Clutch listing replaces the dual-mass flywheel and clutch components on a Cummins Ram that already has a G56 six-speed manual. It does not turn an automatic truck into a manual truck because it contains no manual transmission.
I would start by checking the transmission currently in the vehicle and writing down the exact engine and model year. If the vehicle is an automatic, the Cummins kit is not the answer. If it is a G56-equipped Cummins truck, the Ford packages are irrelevant. This basic separation prevents a buyer from comparing packages by the word “conversion” when they solve different mechanical problems.
Match Ford engine balance before comparing packages
For the small-block Ford options, balance is a fitment gate. The B0FH7PKT8G package is identified as 50 oz balance, while B0FH7Z8NT1 is specified as 28 balance. A similar TKX transmission, clutch diameter, and torque claim do not make the flywheel configurations interchangeable. Check the engine’s actual configuration and verify it against the kit details before buying.
The third Ford listing, B0FH7D5FRD, describes small-block Ford compatibility but does not provide a balance specification in the supplied details. I would ask the seller to confirm the correct balance and exact components for the engine. When the 50 oz or 28-balance choice is known, select that matching option rather than assuming a broad “small-block Ford” label covers every build.
Read capacity figures as limits to verify, not fitment guarantees
All three Ford packages state a capacity up to 600 lb-ft and 7,500+ RPM shifts; the listings also claim support up to 750 horsepower. Those figures are useful for screening a performance build, but they do not confirm that every vehicle, engine combination, or driving style is suitable. Consider the actual torque output, intended use, clutch engagement preference, and the rest of the drivetrain before selecting a package.
The Cummins listing is framed around towing, hauling, and high-torque use, but it does not supply matching horsepower or RPM figures. Its key distinction is a solid flywheel replacing the OEM dual-mass unit. I would compare it on application, included clutch parts, and the buyer’s willingness to use a solid-flywheel setup, rather than directly comparing its specifications with the TKX packages.
Compare what is actually included
The 50 oz Ford kit identifies the TKX, Ram dual-disc clutch, steel bellhousing, and ARP hardware. The 28-balance listing names a TKX, dual-disc clutch, steel bellhousing, fasteners, hardware, and instructions. The other Ford listing adds descriptions of forged shafts, billet hardware, ARP fasteners, and installation instructions. Since these listings overlap but do not describe their contents in exactly the same way, I would confirm the precise parts list for the selected part number rather than assuming the kits are identical.
The Cummins kit specifically lists its pressure plate, clutch disc, solid flywheel, alignment tool, and pilot bearing. That clarity is useful for understanding its scope, but it is not a full installation inventory for every truck. Vehicle-specific requirements, labor, and other parts may still apply. Ask the seller what is included if the listing leaves a part or application detail unclear.
Plan the physical installation and resolve listing conflicts
The Speedway packages are listed at 203 to 207 pounds. That weight can affect delivery, workshop access, and installation. A suitable transmission jack, stable vehicle support, and help handling the assembly are practical needs; a buyer should not plan to position the package unsupported. The lighter 203-pound listing is not automatically the better choice if another package better matches the engine or includes the parts the build needs.
Fitment details deserve the same attention. The Cummins title refers to fitment through 2018, but its specification says 2005–2014. I would treat that as unresolved and confirm the exact year, engine, and G56 application before purchase. For any of these kits, verify the chassis, bellhousing and drivetrain combination, engine balance, and included hardware with the manufacturer or seller when the listing does not answer those questions clearly.
Frequently Asked Questions
Does the Southeast Clutch Cummins kit convert an automatic Ram to a manual?
No. It is described as a clutch and solid-flywheel kit for a Dodge Ram with a Cummins engine and a G56 six-speed manual already installed. It replaces the OEM dual-mass flywheel and includes clutch-related parts, but it does not include a manual transmission. An automatic-to-manual conversion requires a different, broader parts plan.
How do I choose between the 50 oz and 28-balance TKX kits?
Choose based on the balance configuration required by the specific small-block Ford engine, not on the similar TKX transmission or torque claims. The B0FH7PKT8G kit is listed as 50 oz, and B0FH7Z8NT1 is listed as 28 balance. Confirm the engine configuration and kit application with the seller before ordering; a similar-looking package is not proof that the balance parts match.
Are the three Speedway Motors TKX kits interchangeable?
No, I would not assume that they are. They share a TKX-based small-block Ford conversion purpose and similar capacity claims, but the listings identify different balance details and do not describe every included component in the same way. The 50 oz and 28-balance specifications are distinct, and the listing without a stated balance needs confirmation. Match the exact part number to the engine and vehicle.
What does a solid flywheel change on the Cummins G56 kit?
The kit replaces the OEM dual-mass flywheel with a solid flywheel, while also including a pressure plate, clutch disc, alignment tool, and pilot bearing. The listing positions this setup for towing, hauling, and high-torque use. Because it changes the flywheel design rather than retaining the factory dual-mass unit, buyers should confirm that the setup suits their truck and expectations instead of treating it as a like-for-like factory replacement.
What should I confirm before ordering one of these kits?
Confirm the exact vehicle year, engine, transmission, engine balance where applicable, and the kit’s part number. Ask for a precise included-parts list and check whether vehicle-specific pieces are needed beyond the package. For the Cummins listing, resolve the difference between the title’s stated year range and the specification’s 2005–2014 fitment. For the Ford kits, account for the 203–207-pound listed package weight when planning handling and installation.
Conclusion
My recommendation depends on the vehicle and the job. For a 50 oz small-block Ford build, I would begin with the Speedway Motors 50 oz TKX kit because it clearly identifies the transmission, dual-disc clutch, steel bellhousing, and ARP hardware. For a confirmed 28-balance Ford engine, choose the 28-balance package instead; the balance specification matters more than similarities in the performance claims. If detailed installation and performance components are your priority and the engine balance is confirmed, the other TKX listing is worth comparing, though it is the heaviest and less specific about balance.
For a Cummins Ram already equipped with a G56, the Southeast Clutch kit is the only relevant choice in this group for replacing the dual-mass flywheel. I would first get written confirmation of the truck’s year fitment because the title and specification conflict. If your Cummins has an automatic transmission, skip that kit for this job: none of these four listings is presented as a complete Cummins automatic-to-manual conversion package.
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