Garage-D SR > RB Gearbox Adaptor Plate Kit

Back by popular demand is our original Garage-D SR20>RB25 gearbox adaptor plate. 

With SR20 gearboxes notorious for breaking above 300bhp, these adaptor plates allow bolt on fitment of an RB25 large casing gearbox which are generally rated to 500bhp+. Over the years we have sold these adaptor plates literally all over the world, these are the only ones with correct fitment and OEM dowel location.  

This adaptor plate works with all S13/S14 5-Speed flywheels with single plate clutches, there can be engagment issues with twin plate/disk clutches. Twin plate clutches with a hub design are generally ok, this is the responsibility of the installer. This adaptor plate does not work with 6-speed related flywheels as they are a deeper dual mass design.

Zinc coated and GARAGE-D branded adaptor plate contains fitting kit and instructions. Additional parts required for the conversion:

- RB25 gearbox

- RB25 propshaft (needs shortening for S14 / S15 or end swapped for S13 due to carrier bearing)

- RB25 gear stick/shifter

- RB25 clutch slave cylinder

- RB25/R33 manual or S14 auto gearbox cross member

Full packages including gearboxes available aswell as propshaft modification services (all parts available separately also). For more information on this conversion please contact us direct at: info@garage-d.com or +44 (0) 1923 251588