SKU: 7915906956

Namura Piston Kit 100.97mm – Yamaha YFM660 Grizzly '02–'08 / XTZ660

Sale price$103.95 Regular price$115.50
Save 10%

Pay in installments of $28.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Namura Piston Kit 100.97mm – Yamaha YFM660 Grizzly '02–'08 / XTZ660Namura provides high quality piston options to suit a wide range of applications, including direct OEM replacements, high compression variants, and multiple oversizes. B (0. 01 mm) and C (0. 02 mm) oversizes are also available, helping to extend the service life of expensive plated cylinders. Select applications are supported with big bore piston kits. With the addition of MOS2 coating and hard anodising, Namura delivers improved performance and

Namura provides high-quality piston options to suit a wide range of applications, including direct OEM replacements, high-compression variants, and multiple oversizes. B (0.01 mm) and C (0.02 mm) oversizes are also available, helping to extend the service life of expensive plated cylinders. Select applications are supported with big-bore piston kits. With the addition of MOS2 coating and hard anodising, Namura delivers improved performance and durability, without the premium price.

Features:

  • MOS2 (Teflon/Molybdenum) Coated Skirts: Applied using a rolled-on process for a bond up to 10 times stronger than typical spray coatings. Improves heat transfer, reduces friction, and helps prevent cold seizures.
  • Machined Smooth Heads: Reflect combustion heat and minimise carbon build-up, protecting the piston crown. Testing indicates potential gains of up to 6% in horsepower and fuel efficiency.
  • Anodised Domes: Enhance heat resistance and durability, with up to 75% greater strength compared to non-anodised pistons.
  • Hypereutectic Casting Process: Increases silicon content to reduce expansion, improve wear resistance, and withstand higher cylinder temperatures.
  • 0.50 mm oversize up to 100.47 mm, with a 9.2:1 standard compression ratio.
  • Includes piston (individually wrapped), OEM-quality rings (boxed separately), wrist pin, and circlips.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7915906956

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 7 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
Gadget Freak
Bozeman, US
★★★★★ 5
Tought Toy that Last
Tough Chewer love this thing. Has all types of grooves to gnaw at. Has held up pretty well.Haven't food any pieces broken off al over. Dog is about 20 lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
T
Verified Purchase
The Breeze
Belleville, US
★★★★★ 5
One of his favorite chew toys!
Durable for aggressive chewers! I'm glad I purchased this dog toy and I'd definitely buy it again,... however i don't think he'll ever destroy this one... So we're good here!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
D
Verified Purchase
Dparsons65
Massapequa, US
★★★★★ 1
Poor quality.
The little nodes on the ring break off and my dog ate them. Hopefully it will pass.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
R
Verified Purchase
Rosemary C.
Bozeman, US
★★★★★ 5
Great chew toy
I have two golden and they are chewers but this chew toy has stood the test of heavy chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 20, 2025
M
Verified Purchase
MrsQwnBee
Omaha, US
★★★★★ 3
Not for super aggressive chewers even though..
My 10 month old Mastiff chewed this pretty well for a couple hours but I had to take it away from him as it has pieces missing and its not a complete ring anymore. Definitely not indestructible or even close to indestructible. I was sure hoping though. But nope.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2025

recommand products