RCRenew OS .21 Power Backplate kit OS Power backplate improves efficiency

OS Power backplate improves efficiency of the engine adding power and mileage using special air ports in the backplate to channel crankcase air fuel mixture

This car has the following Bearings:

Including: Muffler to manifold springs / Joint sealings / Mani hold spring

Testing with the prototype MTC1 on asphalt has also shown great results

Rear Bearing: D11*D5*T5

RCRenew OS .21 Power Backplate kit OS Power backplate improves efficiencyOS Power backplate improves efficiency of the engine adding power and mileage using special air ports in the backplate to channel crankcase air fuel mixture. Fits OS Based . 21 engines ( BLOK, Protek, OS, Maxima, BUllit, etc) with 26mm diameter backplate. Comes with O Ring. Please measure before you order to make sure it fits your model.