RCRenew OS .21 Power Backplate kit Packed under Nitrogen to eliminate

Packed under Nitrogen to eliminate any contamination

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

With MR33`s pocket scale you can do a lot of different things in RC

Team Magic Compact ni starter w/2000 mah battery

RCRenew OS .21 Power Backplate kit Packed under Nitrogen to eliminateOS 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.