Hyper S-Stage Bore Up Kit (B-Type) 3.1ps (6V Monkey/Gorilla) 88cc

S-Stage allows you to increase displacement while keeping the normal cylinder head and crankshaft.
Furthermore, for the S-Stage 88cc, you can choose between "Standard," which uses high-octane gasoline, and "eco," which uses regular gasoline.
The conventional Standard had a compression ratio of 11.5:1 and recommended high-octane gasoline, but with S-Stage eco, the compression ratio is 10.5:1, making it possible to use regular gasoline.
This can reduce fuel costs.
The Hyper S-Stage includes the S-Stage, a carburetor kit, a high-efficiency air filter, a spark plug, and a 16T drive sprocket to change the reduction ratio due to increased power output.
Displacement: 88cc
Cylinder: φ52H cylinder (aluminum cylinder with iron sleeve)
Included carburetor: DENI18
Included camshaft: Without decomp
Compatible vehicles
: 6V Monkey/Gorilla (Z50J-1600008～1805927)
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