Page 10 - Katalog X Shift Gearboxes 2024

Subaru STI Brand New!

R4 PRO

Sequential

Kit

6-speed

Subaru R4 PRO – Hotshot successor to our timeless R4+

X Shift Gearboxes has introduced the new upgraded sequential kit R4 PRO for the Subaru STI. This
version replaces the well-known sequential kit, the R4+, which has been on the market since 2006.

The R4 PRO features an improved shifting mechanism and enhanced dog rings with modified

geometry. This upgrade extends the lifespan of the dog rings and provides faster, smoother shifting,
along with other advantages.

New improved version of older R4+

Stronger dog rings with modified dog
engagement geometry

Rated torque up to 1000 Nm

Original and proven 6 types of gears ratios

(C1; C2; C3; C4; MR1; MR2)

Optimized gears and shafts

All parts REM superfinished

All of this dramatically increases reliability, durability and lifespan!

Our Subaru kits are compatible with original STI 6-speed gearboxes with codes starting TY856…

Customers have the option to install the kit into their gearbox themselves, send the gearbox to us
installation, or purchase a complete, ready-to-install gearbox from us.

X Shift Gearboxes - SEQUENTIAL WAY TO WIN