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TOP END KIT CERAMIC COMP CYL 66.35/STD 11:1 YAM
TOP END KIT CERAMIC COMP CYL 66.35/STD 11:1 YAM

Top End Kit Ceramic Comp Cyl 66.35/std 11:1 Yam

$ 120.95

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Top End Kit Ceramic Comp Cyl 66.35/std 11:1 Yam

Product Specifications

Weight 1.67 lbs
Dimensions 11.3 × 8.5 × 5.1 in
Part Number

185-4025A
MPN

NX-40025KA
Brand

NAMURA
Available Since

June 17, 2016

Product Features

  • Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit
  • MOS2 (Teflon/Molybdenum) Coated Skirts – A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures
  • Machined Smooth Heads – Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%
  • Anodized Domes – Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons
  • Hypereutectic Casting Process – Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures

Part Locations

Location Available
California (CA) 0
Georgia (GA) 0
Idaho (ID) 1
Indiana (IN) 2
Pennsylvania (PA) 0
Pennsylvania 2 (PA) 0
Texas (TX) 0
National Total 3

Professional Installation Available

Buy online or visit our Kansas City showroom. Contact us for installation service options! Free Ship to Store!

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Thank you for Shopping at Knobtown Cycle!

When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.

Kit Fox – Owner Knobtown Cycle

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Need help with installation?  Our Service Department based in Kansas City, Missouri is here for you.  Fill out a Service Request and lets get you rolling!