99-24 Yamaha YZ250 YZ 250 72mm 295cc Big Bore Cylinder Piston Power Valve Head

Cylinder Works Complete BIG BORE Top End Rebuild Kit!

This is the BEST, MOST RELIABLE big bore top end kit on the market!

Fits Yamaha YZ250 2 Stroke Dirt Bikes 

Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Cylinder Works Big Bore Cylinder Kit

295cc +5.60mm Big Bore Cylinder Kit

This Rebuild Kit Includes:

• Cylinder Works 72mm 295cc Big Bore Nikasil Plated Cylinder
• Vertex Forged Moly Coated 72mm Big Bore Piston Kit (Includes, Piston, Pin, Rings & Clips) (Perfect For Pump Gas)
• Wiseco or Wossner Piston Kit Upgrade Available! Please contact us for availability and price.
• Big Bore Cylinder Head with Big Bore Power Valve Kit
• Vertex Complete Big Bore Top End Gasket Kit
• Hot Rods Piston Wrist Pin Bearing

This is a bolt on kit with no machining required.  All parts come with warranty.

BPRATV - The Best Parts. The Best Performance. The Best Price.

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21009-K01, 21009, CBK0135, 4138, 808670, 822304, K012, 811670, 24079B, 204543447645, PWR134-100, WB1157, PK1573, WPC126, NX-40025-BK, 5CU-11351-00, 5CU-11993-00, 5CU-11354-00, 93210-15639-00, 93210-53638-00, 5NX-13622-00, 90116-08394-00, 90176-08026-00, 90201-08087-00, WPC134, NX-40025, NX-40031T, MX-09153K, 21009-G01