New aftermarket 91mm bore piston and cylinder kit with gaskets rings wrist pins and circlips

10.5:1 compression ratio

This is a ready to bolt on kit

Commander 1000
ATV 1000/1000R
Defender HD10 and DH9
Maverick Sport 1000

Please note this kit will not fit the SXS 1000R due to the lower compression ratio.

No dowel pins included, you will need to transfer these from your engine

Replaces OEM Part Numbers: 420685242 420685248 420623568 420623566 420630210 420245436 420216351 420685244 420296774