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Addon pipe 1415..
OBR stainless steel pipe fits all HPI Baja's and primal dragsters. We've gone with stainless st..
OBR 34cc full mod head kit ..
Full mod G320RC top end.Can be installed onto a stock G320RC engine or is a replacement top end for..
The OBR signature series line is our newest line up of engines which is the absolute best that we ha..
Full Mod - Our top of the engines line. This engine now comes with a TR/OBR billet crankcase at..
We're proud to announce the release of our full mod G320RC 31.8cc engine. We're very happy with the ..
Every long block or engine is now CNC ported and hand finished. CNC porting and hand finishing is al..