Will give greater cooling capacity and increased horsepower and torque. This kit is a TRUE BOLT ON, comes complete with A new Cylinder!
Keep all your orginal parts! Complete new aluminum cylinder with a nickel carbide coating designed with wider water jackets.
Complete 72mm Piston kit forged piston with a moly coating. Everything you need to bolt up and go. We have a full line of BIG BORE KITS. The item "YAMAHA YZ250 293CC ATHENA BIG BORE CYLINDER KIT 02-2019 YZ 300 BIG BORE KIT" is in sale since Thursday, April 14, 2016.This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "atvunlimited" and is located in Sunbury, Ohio. This item can be shipped worldwide.