Renthal Sprocket - 257--428-13GP Yamaha YZ 85 2002-2026 Brand_Headwinds Diameter of the bolt is

Diameter of the bolt is turned slightly smaller than the actual crankshaft diameter

92 mm Piston Material 4032 Aluminum Alloy Bore - Oversize +3

Sealed and weatherproof - perfect for outside use

and any other solvent-based products that can harm the environment

820-50578 allows use of any 5" round AC outer cover with center bolt (must use with 820-505074 or 820-50575) as well as 90 degree air cleaners

Renthal Sprocket - 257--428-13GP Yamaha YZ 85 2002-2026 Brand_Headwinds Diameter of the bolt isFeatures CNC machined from case hardened and core refined 655M13 nickel chromium steel Machined self cleaning mud grooves at each tooth to prevent mud buildup help increase wear resistance Ultralight design has a 10 15% weight savings Specs Chain Size 428 Product Name Sprocket Tooth Count 13 Material Steel Units Each Mounting Position Front Riding Style Off Road