ENGINE 257 SIZE PISTON SUG. DLR. SALE REPL. RING SUG. DLR. SALE FITS MODEL (MM) KIT PART# RETAIL COST PRICE SET PART# RETAIL COST PRICE YAMAHA YZ250F 05-07 (3-ring) - - - - 0912-0858 N/A $31.95 $23.00 YZF450F/ WR450F 06-09 94.97 0910-4951 $158.95 $128.79 $103.00 - - - - YZ250F/ WR250F 08-13 (3-ring) 76.96 - - - - 0912-0858 N/A 31.95 23.00 76.97 - - - - 0912-0858 N/A 31.95 23.00 WR450F 20 96.96 0910-6140 N/A 139.23 89.10 - - - - YZ450F 20 96.97 0910-6143 171.95 139.23 111.40 - - - - PISTON KITS CONT. 1ST 1ST 2ND 2ND 3RD 3RD BORE RING RING 1ST RING RING RING 2ND RING RING RING 3RD RING MFG # DIA. WIDTH RADIAL GEOMETRY WIDTH RADIAL GEOMETRY WIDTH RADIAL GEOMETRY PART # 890XSY-3 89mm 1mm 3.4mm Nitride/ positive twist/ barrel face 1.2mm 3.8mm Cast iron/ taper face 2.5mm 2.8mm 3-pc. Nifflex 0912-0682 900XSY-3 90mm 1mm 3.3mm Nitride/ positive twist/ barrel face 1.2mm 3.8mm Cast iron/ taper face 2.5mm 2.9mm 3-pc. Nifflex 0912-0683 FOUR-STROKE PISTON RING SETS •High-quality performance piston rings •Manufactured from premium materials FOUR-STROKE PISTON RING PRICELIST SUG. DLR. SALE PART # RETAIL COST PRICE 0912-0682 N/A $26.06 $17.90 0912-0683 N/A 26.06 19.90 FITS MODEL SIZE MM PART # OEM RING # REPL. RINGS BETA RR300 Enduro 13-17 Std. 71.95mm 0910-3448 - - GAS GAS EC/ EX300 21-24 Std. 71.94mm 0910-6266 - - HONDA CR250R 05-07 Std. 66.36mm 0910-1189 - - CRF450R 02-03 Std. 95.98mm 0903-0818 - - CRF450R 09-12 Std. 95.98mm 0903-0824 - - KTM 144SX 08 Std. 55.94mm 0910-3437 - 0912-0658 150SX 09-15 Std. 55.94mm 0910-3437 - 0912-0658 YAMAHA YZ80 93-01 Std. 46.94mm PX-7109B 43K-11611-00 - Std. 46.96mm 0903-0827 43K-11611-00 - YZ125 94-96 Std. 53.95mm - 4JY-11611-00 PX-7214R Std. 53.96mm - 4JY-11611-00 PX-7214R YZ125 97-01 Std. 53.95mm - 4JY-11611-00 PX-7214R Std. 53.96mm - 4JY-11611-00 PX-7214R Std. 53.97mm - 4JY-11611-00 PX-7214R Std. 53.98mm - 4JY-11611-00 PX-7214R WR450F 16-18 Std. 96.95mm - - 0912-0652 Std. 96.96mm - - 0912-0652 YZ450F/FX 14-18 Std. 96.95mm - - 0912-0652 Std. 96.96mm - - 0912-0652 PROX PISTON KITS PRICELIST SUG. DLR. SALE PART # RETAIL COST PRICE PX-7109B N/A $63.99 $51.20 PX-7214R N/A 17.95 13.00 0903-0824 N/A 138.10 95.10 SUG. DLR. SALE PART # RETAIL COST PRICE 0903-0827 N/A $63.99 $54.40 0910-1189 N/A 89.97 62.00 0910-3448 220.81 143.53 114.80 SUG. DLR. SALE PART # RETAIL COST PRICE 0910-6266 N/A $136.23 $109.00 0912-0652 N/A 29.31 23.40 0912-0658 N/A 23.63 17.20 PISTON KITS •Manufactured in Japan and designed as OEM replacements •Cast from a high-silicon content aluminum alloymeets or exceeds OEM specifications, then CNCmachined to extremely close tolerances. •Available in standard sizes along with fractional increases in standard sizes •Standard B, C and D sizes extend the of expensive plated plated cylinders •Additional oversizes available in .010 increments •Pistons supplied in a kit package that includes rings, wrist pins and circlips
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