The 6-speed Lotus/Toyota EA60 BG6 transmissions discussed here include came in the following models:
2010-23 Evora (Manual All)
2012-23 Exige V6 (Manual All)
2022+ Emira V6 (Manual All)
We offer completely rebuilt ready to install transmissions with the upgrades listed below already installed. Check them out HERE
This 6-speed transmission is built big and tough and is capable of handling high power and torque on the street or track. Unfortunately it has some severe defects that cause very inconvenient failures even in a low powered car driven conservatively on the street. This is especially inconvenient because, depending on the car model, the labor just to remove and reinstall the transmission is 40+ hours of shop time! Plus transmission teardown and service time.
Shift fork pads
The shift forks, which move the selector rings inside the transmission to select gears, have soft plastic pads on them. This allows for quietest operation but unfortunately these pads fail at an unbelievable rate, most often causing a loss of ability to select 1st, 2nd, 3rd or 4th gear. MWR offers UPGRADED FORK PAD kits, 3 needed, and installation to the forks is easy once the transmission is removed from the car and disassembled.
Input shaft and drive gear splines
Bizarrely, this transmission comes from the factory with poorly made mismatched splines in the interface between the input shaft and the drive gears that mount to it. Most notoriously the 4th/5th drive gear will fail its splines, freewheeling on the input shaft, turning 4th and 5th gears into neutrals. Less commonly the 3rd and 6th drive gears do sometimes experience this failure, and they’re usually already damaged when a trans is apart for repair of a failed 4th/5th gear. Even if the gears don’t fail completely we often find the splines damaged during a teardown. Input shaft always requires replacement as well, damage of the splines goes both ways.
MWR manufactures upgraded parts to address this issue, with far stronger material and tighter, properly designed splines.
INPUT SHAFT
3rd DRIVE GEAR
4th/5th DRIVE GEAR
6th DRIVE GEAR (coming soon)
We do stock the OEM parts as well
INPUT SHAFT
3rd DRIVE GEAR
4th/5th DRIVE GEAR
6th DRIVE GEAR
Want an even more comprehensive solution? We offer the MWR ACE2 GEAR SET which is a complete upgraded gear kit including upgraded input shaft. Better ratios, stronger splines, stronger material throughout. All of the troublesome OEM gears and input shaft are replaced. It even includes a full set of upgraded synchros. You will still need to upgrade your fork pads (sold separately) though!
Want more traction? We offer the Quaife (lifetime warranty, made in UK) and MFactory (fantastic quality, no drawbacks, lower price) helical LSDs. These both improve traction while accelerating but act as an open differential in all other conditions. No downsides and they never wear out. You’ll want the BEARING KIT and RIGHT and LEFT axle seals to complete the install.
Looking for improved shift feel? MWR DETENT SPRING KIT can easily be added with the transmission in the car and makes the shifting sharper and more precise. If you’re doing a rebuild then MWR SYNCHRO SPRING KIT is an awesome upgrade, improving the shift motion inside the transmission.
We of course stock all of the synchros, bearings, forks and everything else you may need for servicing these transmissions along with OEM and high performance clutches, flywheels and more. Check them all out HERE
