S-Stage Big Bore Kit (D-Type) Monkey R/RT 88cc

The S-Stage allows for an increase in displacement while retaining the stock cylinder head and crankshaft.
Furthermore, the S-Stage 88cc offers two options: the "Standard" for high-octane gasoline and the "eco" for regular gasoline.
While the conventional Standard had a compression ratio of 11.5:1 and recommended high-octane gasoline, the S-Stage eco's compression ratio of 10.5:1 now allows for the use of regular gasoline.
This helps reduce fuel costs.
Displacement: 88cc
Cylinder: φ52H Cylinder (aluminum cylinder with steel sleeve)
Compatible Vehicles
: Monkey R/RT (AB22-1000017～)
*If installing a stock carburetor on a V-cylinder, the cylinder will interfere and will need to be shaved.
*Images are for illustration purposes only. The design and specifications of the products shown are subject to change without prior notice. We appreciate your understanding.