70mm Big Bore Cylinder Piston Kit for Honda XR150 CBF150 2015-2023 233cc

  
Converts standard 150cc engines to 233cc for increased displacement and power. Includes cylinder (pre-bored and honed to 70mm), piston, rings, wrist pin, circlips, and top-end gaskets - everything needed for a complete rebuild.

New cylinder and piston restore compression, improve throttle response, and reduce smoke. Professional installation recommended if not experienced with engine rebuilding. The kit includes the cylinder, piston, rings, wrist pin, circlips, and top-end gaskets for a complete engine rebuild. This kit features a 70.00mm standard bore size, matching the CBF233 big-bore upgrade specification for Honda CRF150F and XR150 engines. The kit transforms a standard 150cc engine into a 233cc powerplant.

The cylinder is pre-bored and honed to 70mm. The kit includes the cylinder, piston, piston ring set, wrist pin, piston pin clips, and a full set of top-end gaskets. Restored Engine Performance - New cylinder, piston, and rings restore compression for improved power and throttle response. Complete Top-End Kit - Includes cylinder, piston, rings, wrist pin, circlips, and gaskets - everything needed for installation.

70mm Big-Bore Upgrade - Converts standard 150cc engines to 233cc for increased displacement and power. Replacement - Made to standard specifications for a straightforward installation using mounting points. Cost-Effective Rebuild - An affordable alternative to complete engine replacement, extending engine life significantly.

Fitment - This kit fits the following Honda models. Direct fit with 70mm bore. This cylinder kit fits Honda CRF150F, XR150, CBF150, and CBF233 models from 2006 through 2019. The 70mm bore is a big-bore upgrade specification that increases displacement from 150cc to 233cc. Why Replace This Cylinder and Piston Kit? A worn cylinder and piston assembly can cause. Loss of engine compression and power. Blue or white smoke from exhaust. Poor acceleration and reduced top speed.

Engine knocking or unusual noises. Replacing a worn cylinder and piston assembly restores engine compression, improves fuel efficiency, and extends the service life of your Honda motorcycle. 1 × Cylinder (70mm bore).

1 × Piston (70mm standard bore). 1 × Piston ring set. Installation requires mechanical experience and appropriate tools including a torque wrench. Always clean all mating surfaces before installation. Apply a thin layer of engine oil to the piston, rings, and cylinder bore before assembly.

Refer to the service manual for correct torque specifications and timing alignment procedures. Professional installation by a qualified motorcycle mechanic is recommended if you are not experienced with engine rebuilding.