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TREMEC TKO 5-Speed & TREMEC Magnum 6-Speed


Choose Your Make Below to Find Your PerfectFit™

GM TREMEC Transmission Kits Ford TREMEC Transmission Kits Mopar TREMEC Transmission Kits AMC TREMEC Transmission Kits 4WD TREMEC TR-4050 Transmission Kits

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 aftermaket, but some of the most respected vehicle manufacturers.  We sell two of their large line of transmissions, the TKO 5-Speed and the Magnum 6-Speed.  These two transmissions have dominated the aftermarket for several years now.


Tremec TKO 5-Speed Manual Transmission


About the Tremec TKO 5-Speed

The PerfectFit™ Tremec TKO kits have dominated the market place for well over a decade now.  Well-known collector car auctions always point out the cars with "Keisler TKO 5-Speeds" because the PerfectFit™ Tremec TKOs add value to classic cars. These are the same PerfectFit™ Tremec TKO Kits, once available from Keisler, that have enthusiasts around the globe enjoying their 5 speed without compromise to their original, factory looks.

  • Capable of handling 600 lb-ft torque
  • Capable of 6,200 rpm shifts
  • Interchangable with mechanical or hydraulic clucth 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
  • 1 year warranty with a 2 year installation window


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

TREMEC TKO Modified by Silver Sport Transmissions PerfectFit

  • Optional synchronizer upgrade for 7,000 rpm shifts and bronze fork pads for increased longevity
  • Biased spring shifter mechanism for precise, crisp shifts
  • Mid Cover Plate Machined for greater clearance
  • When required, the PerfectFit™ has a true, internal offset which maintains correct shift geometry. This reduces shifter travel and prevents dirt from entering the shifter mechanism
  • Factory correct angle on the shifter stub
  • 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
  • Accessory mounting bracket removed - eliminates crossmember interference
  • 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


The Tremec Magnum 6-Speed Manual Transmission

About the Tremec Magnum 6-Speed

TREMEC Magnum T56 Shift PositionsThis is the centerpiece of Tremec'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.  Silver Sport Transmissions offers a few Tremec Magnum PerfectFit™ Kits, but the Tremec Magnum 6-Speed is a large transmission and will require tunnel modifications in most applications.

  • Capable of handling 700 lb-ft torque
  • Capable of 7,800 rpm shifts
  • Single rail, shift guide plate design, never miss a shift!
  • Fully synchronized, even in reverse
  • Interchangable with mechanical or hydraulic clutch actuators by removing just a few bolts, no need to tear down the transmission
  • Great for everyday use - short, crisp shifts and a rewarding driving experience
  • Three shifter locations
  • 1 year warranty with a 2 year installation window


Gear Ratios

Tremec Magnum  2.66, 1.78, 1.30, 1.00, 0.80, 0.63 or 2.97, 2.10, 1.46, 1.00, 0.80, 0.63


Silver Sport Transmissions Added Value

  • Optional cryogenic treatment for increased torque capacities
  • PerfectFit™ Kits available for many models to give your car the factory look! All PerfectFit™ Kits come with SST's compact, short throw shifter mechanism.
  • Factory correct angle on shifter stubs for PerfectFit™ and RetroFit™ Kits.
  • Exclusive Silver Sport Transmission Kit Components
    • Hydraulics
    • Pedals*
    • Driveshafts
    • Crossmembers*

*Available for most applications


The Tremec Magnum XL 6-Speed Manual Transmission

Magnum XL 6-Speed

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.

The extended tailshaft eliminates the 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

We offer complete conversion kits so you have everything you need for the conversion, including wiring, clutch kits, driveshafts and more.