If you need to ship us your engine for a warranty claim, rebuild or upgrade please fill out this form and we will reply with our shipping address and a return authorization number. Please leave us your name, contact info, shipping address and a brief description of the work you would like done. 


Full rebuild $160 with return shipping and that covers labor, gasket kit, crankcase bearings/seals, piston ring, piston hardware(wrist pin, needle bearing, thrust washes and clips) and a spark plug. Pricing will go up if the piston, crank, cylinder etc need to be replaced. 

Full mod to Signature Series upgrade $220 with return shipping. Add $30 for our Signature Series billet transfer port plates (G320/G340 only) Add $40 if you would like the bearings, seals, piston ring & hardware changed. 

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