BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM OFFROAD | 2025 PISTON & PISTON KITS 1341 RACER ELITE™ 4-STROKE CR SERIES PISTONS •R&D developed to provide dyno-proven power gains •Asymmetric skirt design for improved wear and even loading on major thrust skirt •Precision fit ring; custom-lapped compression ring for improved power •100% billet machined for superior strength-to-weight ratio and optimized fit • High compression (14:1 for 450cc, 14.5:1 for 250cc) for maximum torque and throttle response •Dome design improves flame travel to maximize air/fuel burn efficiency RACER ELITE™ 2-STROKE SERIES PISTONS •The most advanced forged 2-stroke piston available provides premium performance and durability •2000 Series alloy provides extreme strength for extreme conditions • ArmorPlating™ for protection from harmful detonation and improved ring seal •ArmorFit™ skirt coating for perfect fit and conformability to your cylinder bore •Dedicated forging for greater strength and light weight •Premium-quality rings enhance sealing for each application •Superfinish piston pin reduces friction and smooths operation •Based on more than 75 years as the industry performance leader •Made in the U.S.A. FITS MODEL DESCRIPTION PART # GASGAS MC/EX 250F 21-23 14.5:1 compression 0910-5073 MC/EX 450F 21-23 14:1 compression 0910-5061 HONDA CRF450R 17-24, CRF450RWE 19-24, CRF450RX 17-24 14:1 compression 0910-5066 HUSQVARNA FC 250 16-22 14.5:1 compression 0910-5073 FC 450 14-22, FS 450 15-21, FX 450 17-22 14:1 compression 0910-5061 FITS MODEL DESCRIPTION PART # KTM 250 SX-F/XC-F 16-22 14.5:1 compression 0910-5073 450 SX-F/XC-F 13-22 14:1 compression 0910-5061 SUZUKI RM-Z250 10-24 14.5:1 compression 0910-5072 YAMAHA YZ250F 14-15,YZ250FX 15-16,WR250F 15-17 14.5:1 compression 0910-5076 YZ250F 16-18,YZ250FX 17-19,WR250F 18-19 14.5:1 compression 0910-5071 FITS MODEL BORE SIZE PART # GASGAS MC 65 21-23 45.0 mm 0910-5100 MC 85 21-23 47.0 mm 0910-5085 MC 125 21-24 54.0 mm 0910-5086 EC 250 21-24 66.4 mm 0910-5104 HONDA CR85R 03-07 47.5 mm 0910-5077 CR125R 95-03 54.0 mm 0910-5078 56.0 mm 0910-5079 CR125R 04-07 54.0 mm 0910-5080 CR250R 02-04 66.4 mm 0910-5083 HUSABERG TE 125 12-14 54.0 mm 0910-5086 TE 250 11-14 66.4 mm 0910-5104 HUSQVARNA TC 65 17-24 45.0 mm 0910-5100 TC 85 14-24 47.0 mm 0910-5085 TC 125 14-24,TE 125 14-16,TX 125 17-19 54.0 mm 0910-5086 TE 150 17-20 58.0 mm 0910-5103 TC 250 14-24,TE 250 18-24 66.4 mm 0910-5104 KAWASAKI KX65 00-24 44.5 mm 0910-5087 KX85 14-24 48.5 mm 0910-5088 49.5 mm 0910-5090 50.5 mm 0910-5091 KX100 95-21 52.5 mm 0910-5092 53.0 mm 0910-5093 54.5mm 0910-5094 FITS MODEL BORE SIZE PART # KAWASAKI (CONT) KX125 01-05 58.0 mm 0910-5096 KX250 93-01 66.4 mm 0910-5097 KTM 65 SX/XC 09-24 45.0 mm 0910-5100 85 SX 03-24 47.0 mm 0910-5085 52.0 mm 0910-5102 125 SX 02-24, 125 EXC 09-16, 125 XC-W 17-19 54.0 mm 0910-5086 150 SX 16-22, 150 XC-W/TPI 17-20 58.0 mm 0910-5103 250 SX 03-24, 250 XC-W/TPI/TBi 18-24 66.4 mm 0910-5104 SUZUKI RM65 03-05 44.5 mm 0910-5087 RM85 02-23 48.0 mm 0910-5105 50.0 mm 0910-5108 53.0 mm 0910-5110 RM125 04-06 54.0 mm 0910-5111 56.0 mm 0910-5112 YAMAHA YZ85 02-24 47.5 mm 0910-51161 YZ125 05-21,YZ125X 20-23 54.0 mm 0910-5120 56.0 mm 0910-5121 48.0 mm 0910-5122 YZ250 99-24,YZ250X 16-24 66.4 mm 0910-5123 1 Crankcase clearance required for 50 mm and larger. •DLC-coated piston pin reduces friction and improves scuff resistance •Enhanced pin oiling for improved lubrication and reduced friction •Pressure seal groove reduces ring lifting and power loss • ArmorGlide® skirt coating reduces friction for quieter operation, improved scuff resistance • Pistons include rings, pin, and circlips •Made in the U.S.A.
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