Full bolt in 6-speed (T56 Magnum) swap kit for the Lexus IS300. You can choose the transmission of choice GR700, GR900, or GR1000. This kit includes a brand new Tremec T56 Magnum built to spec, Quicktime SFI Steel bell housing, billet shifter relocation, and chromoly transmission mount. Driveshaft and clutch is optional, but recommended to make this an easy bolt-in experience. There is NO CORE charge.
If you add up the cost on all these parts, you will see that I am matching prices with big name speed shops like Summit and Jegs. Not only do I match big box store pricing but I put it all together in a one-stop-shop package deal and also provide you with the little details they don't... like proper hardware and a pilot bearing for the bellhousing, which quicktime doesn't include... Also I trim the bell to fit perfectly, I am not just drop shipping an item and taking my cut of profit like these big name stores. I also include a wiring pigtail kit, and billet speed sensor block off. Oh, and did I mention I have actual product support as well? Try calling Summit and asking for help on your T56 Magnum swap!
The stock tremec is rated at 700 ft lbs of torque. Just for comparison, the Getrag V160 is only rated around 500 ft lbs in stock form. These transmissions are STOUT.
I built and tested this kit to be a direct replacement for the Getrag V160. We all know the V160 is a great transmission, but V160 parts have become impossible to find. Rather than risk breaking your transmission and not being able to repair it, I suggest swapping to this setup and put your V160 away for safe keeping. The getrag v160 will continue to gain value as parts become even more scarce.
These transmissions have great aftermarket support, aftermarket gearsets, and parts readily available for when you ruin a synchro or break a gear tooth.
This is perfectly setup for a 2001-2006 Lexus IS300. The shifter sits perfectly in the factory location.
This bolt-in kit includes:
All transmission builds are created from brand new stock T56 Magnums, NO USED transmissions EVER. These are then built to your specs. Choose the power level you need.
This is a brand new T56 Magnum direct from the Tremec factory, and I match the big box store prices. You can buy from me and get real experience or try calling the big name stores with your swap tech questions and see what kind of service you get! Read more here: GR700 Transmission
We take a brand new Magnum Trans and give it a 1st thru 4th carbon fiber blocker ring upgrade. Upgraded bronze Fork Pads on all forks. Includes sprayer bung mods which is normally a $150 add-on. This is basically a GR1000 without the cryogenic treatment and rem polishing. Read more here: GR900 Tranmission
We take a brand new Magnum Trans and give it a full REM polishing and Cryogenic treatment of the gear set. We do a 1st thru 4th carbon fiber blocker ring upgrade. Then include upgraded bronze Fork Pads on all forks. Also includes sprayer bung mod and case mods to fit Supra tunnel. Read more here: GR1000 Transmission
We take a brand new Magnum Trans and faceplated the 1-4 gears. Includes custom billet shift forks, bronze fork pads, and then we do a cryogenic treatment of the gearset, and then do a rem polishing of the gearset. Read more here: GR1000F Transmission
Slight clearance mods to the center case are needed to allow fitment into the MKIV supra tunnel, this is included on all my transmissions except the GR700. The Supra 6-speed tunnel does not require any tunnel modification other than 2 minutes to slightly clearance at the shifter location. I will provide instructions to customers.
You will need a 4.00 or taller gear to make the car not sluggish, and will perfectly match the V160 gearing. More info on gear ratios can be found on this page I created T56 Magnum vs V160.
These transmission's will work well with the factory IS300 rear, the magnum gearing actually is WAY better than the V160 overall gearing when using a stock IS300 rear. However, depending on your power levels it may not be able to hold the power. A carbon fiber driveshaft can lessen the abuse, and will absorb some of the harshness of the manual transmission.
The IS300 requires very minor hammering in the tunnel in some tight spots. It will only take about 10 minutes of work. I will provide instructions to customers.