TREMEC TKX, TKO, T-5, TR-4050 5-Speeds & TREMEC Magnum, Magnum-F, & Magnum XL 6-Speeds

Choose Your Make Below to Find Your PerfectFit™
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TREMEC Manual Transmissions
Tremec is a proven and popular brand of transmissions. They recently celebrated their 50-year anniversary (open since 1964). They supply not only the aftermarket but some of the most respected vehicle manufacturers. Silver Sport Transmissions specializes in developing conversion kits to place these modern transmissions into your classic car, truck or street rod. We’re also the ONLY TREMEC distributor to sell the TR-4050 4WD transmissions.
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TREMEC TKX 5-Speed Manual Transmission
Compact, rounded case - No cutting for most models
- Capable of handling 600lb•ft torque
- Capable of 7,500 rpm shifts
- 30-50% increase in fuel economy
- Low RPM cruising
- Reduced NVH (noise - vibration - harshness)
- Interchangeable with mechanical or hydraulic clutch actuators by removing just a few bolts, no need to tear down the transmission
- Designed for everyday street use - an ideal blend of brute strength and street manners
Gear Ratios
WIDE 3.27, 1.98, 1.34, 1.00, 0.72
CLOSE 2.87, 1.89, 1.28, 1.00, 0.68 or 2.87, 1.89, 1.28, 1.00, 0.81
Silver Sport Transmissions Added Value
The TKX is compact but limited to just a few shifter positions. Silver Sport Transmissions puts the shifter exactly where it should be and provides everything you need to make the conversion.
- STX® Short Throw Shifter
- True, an internal offset which maintains correct shift geometry. This reduces shifter travel and prevents dirt from entering the shifter mechanism
- Shifter stub has the factory-correct angle
- Complete PerfectFit™ Transmission kits with all the accessories you need to convert a 3 or 4-speed manual or automatic to the TREMEC TKX 5-Speed
- Longest warranty available at 36 months
Input | Gear Ratios | ||||||||
Part Number | Style | Torque Rating | Spline | 1st | 2nd | 3rd | 4th | 5th | Rev. |
TCET18086 | Ford | 600 lb-ft | 10 | 3.27 | 1.98 | 1.34 | 1.00 | 0.72 | 3.00 |
TCET18084 | Ford | 600 lb-ft | 26 | 2.87 | 1.89 | 1.28 | 1.00 | 0.81 | 3.00 |
TCET17765 | Ford | 600 lb-ft | 26 | 2.87 | 1.89 | 1.28 | 1.00 | 0.68 | 3.00 |
TCET18085 | Ford | 600 lb-ft | 26 | 3.27 | 1.98 | 1.34 | 1.00 | 0.72 | 3.00 |
TCET18083 | GM | 600 lb-ft | 26 | 3.27 | 1.98 | 1.34 | 1.00 | 0.72 | 3.00 |
TCET17722 | GM | 600 lb-ft | 26 | 2.87 | 1.89 | 1.28 | 1.00 | 0.81 | 3.00 |
TCET17805 | GM | 600 lb-ft | 26 | 2.87 | 1.89 | 1.28 | 1.00 | 0.68 | 3.00 |
Watch this video for a detailed overview of the TREMEC TKX.
TREMEC TKO 500 and TREMEC TKO 600 5-Speed Manual Transmissions
(NO LONGER IN PRODUCTION, SEE TKX)
Capable of handling 600lb•ft torque
- Capable of 6,200 rpm shifts
- 30-50% increase in fuel economy
- Low RPM cruising
- Reduced NVH (noise - vibration - harshness)
- Interchangeable with mechanical or hydraulic clutch actuators by removing just a few bolts, no need to tear down the transmission
- Designed for everyday street use - an ideal blend of brute strength and street manners
Gear Ratios
TREMEC TKO 500 3.27, 1.98, 1.34, 1.00, 0.68
TREMEC TKO 600 2.87, 1.89, 1.28, 1.00, 0.64 or 2.87, 1.89, 1.28, 1.00, 0.82
Silver Sport Transmissions Added Value
Keisler Engineering developed the first conversion kit for the TREMEC TKO well over a decade ago. While other companies have come and gone trying to duplicate the “PerfectFit™ Kit”, none have the engineering expertise, nor the vast knowledge base Keisler Engineering and Silver Sport Transmissions have developed over the years. Silver Sport Transmissions is proud to be able to continue to provide the most popular, complete, and carefully engineered conversion kits available.
- Optional synchronizer upgrade for 7,000 rpm shifts and bronze fork pads for increased longevity
- STX® Short Throw Shifter has a biased spring shifter mechanism for precise, crisp shifts
- Mid CoverPlate Machined for greater clearance
- True, an internal offset which maintains correct shift geometry. This reduces shifter travel and prevents dirt from entering the shifter mechanism
- Shifter stub has the factory-correct angle
- Oil-free, leak-free shifter housing (The factory TREMEC shifters do not leak, but some competitors' versions do)
- Shifter deck is machined to have an additional 1/4" clearance in the tightest part of the tunnel
- When required, the accessory mounting bracket removed -eliminating crossmember interference
- Complete PerfectFit™ Transmission kits with all the accessories you need to convert a 3 or 4-speed manual or automatic to the TREMEC TKO 5-Speed
- Longest warranty available at 36 months
Watch this video for a detailed overview of the TREMEC TKO, the optional upgrades, and how SST customizes the case for better fitment.
TREMEC T-5 5-Speed Manual Transmission
The most compact TREMEC transmission
- 300 lb•ft torque capacity
- 30-50% increase in fuel economy
- Low RPM cruising
- Reduced NVH (noise – vibration – harshness)
- Extremely lightweight; just 75 lbs dry!
- Ideal for moderate horsepower builds where space is limited
- Excellent drivability with light shift effort, smooth shift quality
Gear Ratios
TREMEC T-5 2.95, 1.94, 1.34, 1.00, 0.63
Part Number: 1352-000-2515.0
Silver Sport Transmissions Added Value
- STX® Shifters available for even shorter, crisper shifts
- PerfectFit™ Kits available for select applications
TREMEC TR-4050 5-Speed Manual Transmission for 4WD
600 lb•ft Torque Capacity
- Original equipment in 2006-2007 F550 trucks
- Right Side PTO – 6 bolt Offers the ability to run hydraulic pumps
- High-contact constant-mesh helical gears for maximum strength
- Die-cast aluminum allow housing saves weight while offering considerable rigidity
- Multi-rail shift linkage provides excellent feel and performance
- Tapered bearing on input, main and counter shafts provide excellent internal stability
- Needle bearings under gears reduce friction and noise output
- All forward gears and reverse gear synchronized
- Advanced synchronizer technology promotes smoother shifting and reduced shift effort
- Countershaft mounted 5th gear synchronizer improves noise, vibration, and harshness in overdrive.
Gear Ratios
TREMEC TR-4050 6.16, 3.11, 1.71, 1.00, 076 Rev. 6.03
Weight and Dimensions
- 164 lbs dry
- 19.5” Overall length
- .590” Pilot diameter
- 5.125” Index retainer diameter
- 1.125” Input shaft diameter, 10spline, 6.5” length
Silver Sport Transmissions Added Value
- STX® Shifters available for even shorter, crisper shifts
- Several conversion kits available and more to come!
TREMEC Magnum 6-Speed Manual Transmission
About the TREMEC Magnum 6-Speed

This is the centerpiece ofTREMEC’s high-performance line-up. The Magnum 6-speed takes the state-of-the-art OEM technology and pairs it with the most popular features of the TREMEC TKO 5-speed. It has two overdriven gears and is a strong, yet refined transmission. This transmission has many of the same internal parts as today’s most celebrated factory muscle cars – including the Dodge Challenger, Viperandthe Chevrolet Camaro – giving you refinement where you want and strength where it counts.
- Capable of handling 700lb•ft torque
- Capable of 7,800 rpm shifts
- Single rail, shift guide plate design, never miss a shift!
- Fully synchronized, even in reverse
- Interchangeable with mechanical or hydraulic clutch actuators by removing just a few bolts, no need to tear down the transmission
- Three shifter locations
- 30-50% increase in fuel economy
- Low RPM cruising for greatly reduced driver fatigue and improved highway driving experience.
- Reduced NVH (noise – vibration – harshness)
Gear Ratios
TREMEC Magnum 2.66, 1.78, 1.30, 1.00, 0.80, 0.63
TREMEC Magnum 2.97, 2.10, 1.46, 1.00, 0.80, 0.63
Silver Sport Transmissions Added Value
- PerfectFit™ Kits available for many models to give your car the factory look!
- RestoFit™ Kits available for some models where a factory look is impossible, but we still make it look polished and refined as if the factory designed it themselves.
- STX® Shifters available for extremely short throws!
- Factory correct angle on shifter stubs for PerfectFit™ Kits.
- Exclusive Silver Sport Transmission Kit Components
- Longest warranty available at 36 months
Spline Count | Gear Ratios | ||||||||
Part Number | Style | Torque Rating | Input/Output | 1st | 2nd | 3rd | 4th | 5th | 6th |
TUET11009 | GM | 700 lb-ft | 26 / 31 | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 |
TUET11012 | GM | 700 lb-ft | 26 / 31 | 2.97 | 2.10 | 1.46 | 1.00 | 0.74 | 0.50 |
TUET11010 | Ford | 700 lb-ft | 26 / 31 | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 |
TUET11011 | Ford | 700 lb-ft | 26 / 31 | 2.97 | 2.10 | 1.46 | 1.00 | 0.74 | 0.50 |
TREMEC Magnum-F 6-Speed Manual Transmission
About the TREMEC Magnum-F 6-Speed
Designed to replace T-56 transmissions in 1998-2002 Chevrolet Camaros and Pontiac Firebirds, the Magnum-F® 6-Speed is a completely new, direct replacement specifically designed for fourth gens by TREMEC®. The Magnum-F utilizes the same design advances found in the TR-6060 and TREMEC Magnum 6-Speeds to provide fourth-gen enthusiasts significantly improved performance and relief from a shrinking pool of quality T-56 replacement parts.
It’s also a great transmission for many late model cars, including 3rd Gen F-bodies, LT1-powerered4th Gen F-bodies, LS-swapped late models of all varieties, and sport compact applications such as A80 Supras, FD RX-7s, and more!
- Capable of handling 700 lb-ft torque
- Capable of 7,800 rpm shifts
- Fully synchronized, even in reverse
- Direct replacement for 1998-2002 Camaro / Firebird.
Gear Ratios
TREMEC Magnum-F 2.66, 1.78, 1.30, 1.00, 0.80, 0.63
TREMEC Magnum-F 2.97, 2.10, 1.46, 1.00, 0.80, 0.63
Silver Sport Transmissions Added Value
- Best Customer Service
- Stocking Distributor, Fast Shipping
- Technical Support
- Installation Service Available
- Many accessory parts are also available: bellhousing, flywheel, clutch, hydraulic bearing kit, pilot bearing, slip yoke, hardware, wiring, STX Shifter, shifter handle, shifter ball, and TREMEC HP-MTF oil.
Spline Count | Gear Ratios | ||||||||
Part Number | Style | Torque Rating | Input/Output | 1st | 2nd | 3rd | 4th | 5th | 6th |
TUET16362 | GM | 700 lb-ft | 26 / 31 | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 |
TUET16363 | GM | 700 lb-ft | 26 / 31 | 2.97 | 2.10 | 1.46 | 1.00 | 0.74 | 0.50 |
TUET17638 | GM | 700 lb-ft | 26 / 31 | 2.97 | 2.10 | 1.46 | 1.00 | 0.74 | 0.50 |
TREMEC Magnum XL 6-Speed Manual Transmission
About the Tremec Magnum XL 6-Speed
TREMEC introduced this transmission in 2012 as a continuation of the popular Magnum 6-Speed series. The Magnum XL has everything the Magnum has, but they eliminated the multiple shifter locations and dual speedo outputs.
Theextendedtailshafteliminatesthe semi-remote shifter found in many popular late-model cars, but it's narrow enough to fit in the tunnel without modification.
We offer this transmission for 2005-2014 Mustangs.
Silver Sport Transmissions Added Value
- Best Customer Service
- Fast Shipping
- Technical Support
- Installation Service Available
- Many accessory parts are also available: bellhousing, flywheel, clutch, hydraulic kit, pilot bearing, slip yoke, driveshaft, hardware, wiring, STX Shifter, shifter handle, shifter ball, and TREMEC HP-MTF oil.
Spline Count | Gear Ratios | ||||||||
Part Number | Style | Torque Rating | Input/Output | 1st | 2nd | 3rd | 4th | 5th | 6th |
TUKT12019 | S197 Mustang | 700 lb-ft | 26 / 31 | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 |
TUKT12021 | S197 Mustang | 700 lb-ft | 26 / 31 | 2.97 | 2.10 | 1.46 | 1.00 | 0.74 | 0.50 |