Rex rallycross version. Customer installation.
  • Rex rallycross version. Customer installation.
  • Rex base engine
  • Rex billet intake. Plenum with bellmouths.
  • Rex 45mm FIA inlet restrictor
  • Rex crankcase service opening. Connecting rod big end removable with no oil system disassembly.
  • Rex bottom view


Special order, 2-5months

45mm FIA inlet restrictor, 2000cc, 9500rpm, single turbo (full FIA RallyCross SuperCar 'Custom Engine' rules compliant spec)
1000hp, 2400cc, 9500rpm, single turbo (recommended non-restricted circuit racing spec)

Complete engine package.

The little brother 'budget' version of Thor. Still a Full Billet dry sump racing engine. But extremely economical design resulting in exceptional performance/price ratio.



Return policy

Rex complete engine package

Built on Thor technology, our Rex engine is designed to provide exceptional performance/price ratio.
The ElmerRacing Rex engine is designed to perform well in both FIA RallyCross 45mm inlet restrictor trim, and as a non-restricted circuit or street use. Designed to use modern anti-lag in racing use. Displacement options are 2000-2400cc. Rex will reliably produce over 1000hp in non-restricted circuit racing trim on moderate boost.

This complete engine package includes drysump oil pump, intake and exhaust manifolds, turbo, sensors, wiring harness, and comes with our in-house designed XEMS ECU. Package is available also without a ECU.

Engine is fully team serviceable. We of course also provide rebuild services, if the customer wants it.
The engine is fully designed by us in-house at Elmer Racing, where we also manufacture the block, head, crank etc. Likewise the state-of-the-art XEMS ECU is developed fully by us, including coding, circuit board layout, housing etc.
Engine package can be customized for special uses.
We will make the engine block fit your gearbox / bell housing directly. No extra mounting spacers needed.
Custom engravings and logos possible.
The rallycross version of Rex is fully compliant with FIA world championship RallyCross SuperCar 'custom engine' regulations, including 45mm inlet restrictor.