Wiseco PK1236 Top End Kit - Standard Bore 78.00mm,12.9:1 Compression miscellaneous-home-school-accessories Flows better than competing units

Flows better than competing units in large part because of unique internal venturi design

2002-2003 Honda CBR1100XX Super Blackbird

even better

2022 Ski-Doo Grand Touring Limited ACE 900 Turbo

2013-2015 KTM 500 XC-W

Wiseco PK1236 Top End Kit - Standard Bore 78.00mm,12.9:1 Compression miscellaneous-home-school-accessories Flows better than competing unitsBore: 78. 00mm Compression: 12. 9: 1 Compression Sizing: Standard Bore Contains all the necessary components for overboring or rebuilding your top end. Feature forged pistons, rings, wrist pins, circlips and top end gasket set. Vehicle Fitment: 2004 2007 Honda CRF250R 2004 2009 Honda CRF250X 2012 2013 Honda CRF250X 2015 2017 Honda CRF250X