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This is a Stage 2 performance kit for the 212cc Hemi Predator engine (model 60363, the one with the cast aluminum valve cover). It builds on a Stage 1 package with a bored .650 carburetor and a Mod 2 camshaft, and the maker claims 12+ horsepower without splitting the crankcase. The kit suits kart, mini bike and generator builders who want a bolt-on power jump and are willing to tune a carb and set timing. Rivals sell similar stage kits, but this one bundles the cam, carb, flywheel and springs together; the trade-offs are a fixed spring weight that depends on stock and a header that needs its own brace.
In stock
The Stage 2 Hop Up Kit is made for the 212 Hemi Predator engine. It lets you raise performance without opening up the engine case. It is the same as the Stage 1 kit, with a bored carb and a performance cam added to produce 12+ HP.
The kit fits Hemi Predator engines, Model 60363 (210FA), that came with a cast aluminum valve cover. It does not fit non-Hemi Predator engines, Model 69730 (R210), that came with a stamped steel valve cover.
If you add the optional header/exhaust, support the pipe with a bracket or brace to either the frame or the engine. Otherwise the pipe may fracture or break. When you select the billet flywheel, the small fan and offset key are not included and are not needed.