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Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01

  • Part #: 140406
  • Manufacturer Part #: 21002-K01

MSRP Price: $649.95

Our Price: $584.96

You Save:
$64.99 (10%)
Ships In 3-4 Business Days

Overview of Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01

  • Direct bolt-on, ready-to-install cylinders; require no replating and look virtually identical to the OEM
  • Nickel Silicon Carbide plated for long life
  • Honed to exact size for easy piston installation
  • Big bore cylinders do not require machine work (unless noted)
  • Big bore cylinder kits come complete with gaskets, cylinder, piston, rings, pin and clips

  • REPLACEMENT PARTS

  • Replacement Big Bore Cylinder: Order No. 140411
  • Replacement Big Bore Piston Kit: Order No. 131449S
  • Replacement Big Bore Piston Rings: Order No. 131449SR
  • Replacement Big Bore Gasket Kit: Order No. 263950


Included Items:

(1) Cylinder

(1) Base gasket

(1) Engine case gasket

(1) Exhaust gasket

(1) Head gasket

(1) Piston

(2) Cir-clips

(1) Wrist pin

(1) Top ring

(2) Oil rings

(1) Oil spacer

Instructions

 

Specs for Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01

Type Cylinder Kit
Type - Top End Kits Top End Kit w/Cylinder
Units Each
Weight 3.35 lbs

Specs for Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01

Type Cylinder Kit
Type - Top End Kits Top End Kit w/Cylinder
Units Each
Weight 3.35 lbs

Fitment for Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01

See if this part fits your ride

Part 140406 fits the following machines

Yamaha
  • 2006 Yamaha WR250F
  • 2005 Yamaha WR250F
  • 2004 Yamaha WR250F
  • 2003 Yamaha WR250F
  • 2002 Yamaha WR250F
  • 2001 Yamaha WR250F
  • 2013 Yamaha YZ250F
  • 2012 Yamaha YZ250F
  • 2011 Yamaha YZ250F
  • 2010 Yamaha YZ250F
  • 2009 Yamaha YZ250F
  • 2008 Yamaha YZ250F
  • 2007 Yamaha YZ250F
  • 2006 Yamaha YZ250F
  • 2005 Yamaha YZ250F
  • 2004 Yamaha YZ250F
  • 2003 Yamaha YZ250F
  • 2002 Yamaha YZ250F
  • 2001 Yamaha YZ250F
  • 2006 Yamaha YZ250FSP 50th Anniversary Edition

Big Bore Complete Cylinder Kit - 41002-K01

5 out of 2 reviews
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Great power increase in my WR450. The C-clips for the piston wrist pin are a bit difficult. I think the design would need a lock ring...All over good choice. Recommend rejetting your carb and a quick shot excellerator pump cover for best performance.

Review By:

from Panama City Fla

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Great up-grade

I put this big bore kit on my bike , and wow everything fit excellent and it was so easy. I got so much more power now when i'm up in the mountains and over on the track. It was well worth the money and it was so quick to change out. I'm satisfied and happy with my choice.

Review By:

from Gespe coast,Quebec

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Instructions and Manuals for Cometic +3mm Big Bore Complete Cylinder Kit - 269cc - 21002-K01