BORE KIT - 265cc

74.5mm Piston, 10.5:1 TO 12.75:1 Compression.

Forged Piston.

This kit bores into your stock cylinder.  Overall horsepower and torque are increased, making the Kymco 250 even more fun in tight woods, hillclimbs, mud and sandy terrain.

Piston can be ordered with compression ratios from 10.5:1 all the way up to 12.75:1!

INCLUDES:  Piston, pin, rings, circlips, headgasket.

REQUIRES:  Boring, Compression higher than 11:1 must run race gas. 

CAMSHAFT - PERFORMANCE GRIND

HARDWELD CAM, INCLUDES CORE CHARGE

Developed by Powroll's in-house research team to perfectly compliment the 265cc Bore Kit, this camshaft boosts midrange and top end power without sacrificing rideability or reliability.

Ground in the USA to exacting specifications, each high quality cam meets the rigorous standards of excellence set by Powroll and Kymco.

POWROLL TUNED EXHAUST

This slip-on system features a Supertrapp IDS2 muffler. 

Forestry Approved Spark Arrestor can be tuned for individual engine performance. 

Decibel levels can also be modified by adding or subtracting internal disks, making this the most versatile system available for the Mongoose!