ENGINE 279 HIGH-PERFORMANCE PISTONS •Forged high-silicon aluminualloy for maximum strength and dependability •Wiseco offers a complete range of popular piston models and years for both trail and racing applications NOTE: Wiseco rings fit only Wiseco pistons. PK PISTON AND GASKET KITS •Contains all the necessary components for overboring or rebuilding your top end •Features forged pistons, rings, wrist pins, circlips and top end gasket set •Cylinder sleeves must be purchased separately WISECO PISTON PRICING •All Wiseco High-Performance Motorcycle Pistons are priced with rings and circlips BORE (MM) BORE OVER REPL. REPL. X STROKE DISPL. SIZE SIZES PK KIT PISTON RING SET WRIST PIN. FITS MODEL (MM) (CC) (MM) (MM) PART # PART # PART # PART # OFFROAD HONDA 2-STROKE CR125R 00-02 54 X 54.5 134 56 2.0 0903-0731 - - - Racer’s Choice GP Style Electra Coated. No intake window. Pinned on centerline. Longer skirt than stock *Nikasil Bore - Cylinder sleeving CR480R 82-83 89 X 472 91.0 2.0 - - 3583TD1 - Pro-Lite CR500R 84-01 89 X 491 91.0 2.0 - - 3583TD1 - Pro-Lite HONDA 4-STROKE XR70R 97-03 47 X 41.4 75 48.0 1.0 - 0910-0749 - - CRF70F 04-12 10.5:1 Compression Cylinder boring required for oversizes XR250R 84-85 75 250 75.5 0.5 - - 2973XG - XL250R 84-87 Radial Head KAWASAKI 2-STROKE KX250 05-08 66.4 249.3 66.4 X 72 249.30 68.5 2.1 - 0910-0664 - - Pro-Lite KAWASAKI 4-STROKE KLX400 03-04 (all) 94.5 X 62.6 440 94.5 4.50 - 0910-0768 - - 440cc Big Bore Piston 12.5:1 Compression ArmorGlide skirt coated *Nikasil Bore - Cylinder sleeving or big bore cylinder required KTM 2-STROKE 65 SX/XC 99-08 45 X 40 63.58 47.0 2.0 - 746M04700 - - Pro-Lite *Nikasil Bore - Cylinder sleeving or replating required for oversizes YAMAHA 2-STROKE YZ80 84 48 X 45.6 82 50.0 2.0 - 508M05000 - - YZ80 93-01 47 X 47.8 82 47.5 0.5 - 646M04750 - - Pro-Lite *Ceramic Composite - Cylinder sleeving or replating required for oversizes YZ490 82-83 87 X 82 487 88.5 1.5 - - 3484TD - IT490 83-84 YZ490 84-90 87 X 82 487 88.5 1.5 - - 3484TD - WR5091-93 Pro-Lite YAMAHA 4-STROKE YZ250F 12-13 77 X 53.6 250 77 STD 0903-1146 - - - 13.5:1 Stock Compression x Nikasil bore 53.6 WISECO PISTONS PRICELIST SUG. DLR. SALE PART # RETAIL COST PRICE 0903-0731 $259.95 $167.15 $114.49 0903-1146 309.95 196.55 135.47 0910-0664 184.95 115.34 70.63 0910-0749 134.95 83.17 60.46 SUG. DLR. SALE PART # RETAIL COST PRICE 0910-0768 $269.95 $168.08 $118.51 508M05000 144.95 112.30 63.37 646M04750 134.95 82.39 59.89 746M04700 134.95 82.39 59.89 SUG. DLR. SALE PART # RETAIL COST PRICE 2973XG $49.95 $30.97 $29.30 3484TD 54.95 32.21 32.20 3583TD 54.95 32.21 32.20
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