WPC134, 21009-K01, CBK0135, 4138, 808670, 822304, K012, 811670, 5CU-11993-00, 5CU-11354-00, 93210-15639-00, 93210-53638-00, 5NX-13622-00, 90116-08394-00, 90176-08026-00, 90201-08087-00, NX-40025, NX-40031T, BR8ES, WB1051, B5011, MX-09153K, PWR134-100, WB1157, PK1573, WPC126, NX-40025-BK, 5CU-11351-00

/ Wiseco /Cylinder Works / Vertex Complete BIG BORE Motor Rebuild Kit!

This is the BEST VALUE &MOST RELIABLE rebuild kit on the market!

Fits Yamaha YZ250 2 Stroke Dirt Bikes

Years 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

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
• Wiseco Complete Bottom End Rebuild Kit withHeavy Duty Crankshaft Assembly (Includes Heavy Duty Connecting Rod)*
• Wiseco Piston Wrist Pin Bearing
• Wiseco (Koyo, NTN)Heavy Duty Crank Main Bearings with Crank Seals
• Wiseco Complete Bottom Motor Engine Gasket Set (Made by Cometic orAthena)
• Wiseco Complete Bottom End Engine Oil Seal Kit (Made by Cometic or Athena)
• And of course a new NGK Spark Plug to make sure it fires right up!

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

– The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!

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