2021 Parts Unlimited Offroad

ENGINE parts-unlimited.com 2021 PARTS UNLIMITED OFFROAD BOLD MAGENTA part numbers are new for 2021 1043 DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. SEE PAGE 4 FOR IMPORTANT EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND WARRANTY INFORMATION. HIGH PERFORMANCE PISTONS continued on next page. HIGH-PERFORMANCE PISTONS • Forged from high-silicon aluminum alloy for maximum strength and dependability • Wiseco offers a complete range of popular piston models and years for both trail and racing applications Formula for computing cubic centimeter displacement D = Bore Size in Inches; S = Stroke in Inches; Number = Number of Cylinders D(2) x .7854 x S x N x 16.387 = CC Displacement WISECO FEATURES PRO-LITE PISTONS • Durability, longevity and increased horsepower • Innovative forging design and piston skirt provide maximum horsepower and torque 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 • See price list on page 1072 WISECO PISTON PRICING • All Wiseco High-Performance Motorcycle Pistons are priced with rings and circlips; see price list on pages 1070-1071 4-STROKE RACER’S CHOICE PISTONS • Now you can own the same race parts as all the top race teams • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer • When blow-by starts to increase on other pistons and power starts to fade, Wiseco Race Series parts continue sealing and performing NOTE: Service intervals may be increased with Racer’s Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only. 2-STROKE GP SERIES PISTONS • Have additional features over standard Pro-Lite parts • Each piston is E-coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end WRIST PINS • Wiseco wrist pins are strong, lightweight and can be used with OEM pistons, too • Wiseco 2-stroke pistons include a wrist pin unless indicated • See price list on page 1073 TOP-END BEARINGS • High-quality bearings are manufactured to the highest standards; case-hardened for maximum life and smooth operation at high engine speeds • See price list on page 1073 CIRCLIPS • Two high-strength, easy-to-install circlips furnished with every piston • Order additional inventory from the chart on page 1073 • See price list on page 1073 REPLACEMENT RING SETS • Each ring set is for one piston • See Wiseco ring buyer’s guide for details • See price list on page 1073 NOTE: Wiseco rings fit only Wiseco pistons. FITS MODEL BORE (MM) X STROKE (MM) DISPL. (CC) BORE SIZE (MM) OVER SIZES (MM) PK KIT PART # PISTON PART # REPL. RING SET PART # REPL. CIRCLIPS PART # REPL. WRIST PIN PART # TOP‑END BEARING PART # ATK/​ROTAX 250 96‑01 67.5 250 67.5 STD - 0910-2872 2658CD CW18 S-477 - x 69.8 BETA 250 RR 18‑19 66.4 249 66.4 STD - 0910-0778 2614CD CW18 S-508 B1037 Dual ring x - - - - - - 72 - - - - - - 250 RR 18‑19 66.4 249 66.4 STD - 824M06640 0912-0106 CW18 S-508 B1037 Single ring x - - - - - - 72 - - - - - - GAS GAS 2‑STROKE EC 125 00‑11, MC125 00‑11 54 125 54.0 STD - 0910-0729 2126CS CW15 - - Racer’s Choice GP Style x 134 56.0 2.0 - 0910-0730 2205CS Electra Coated 54.5 *Nikasil Bore – Cylinder sleeving or replating required for oversizes EC200 00‑14 62.5 199 62.5 STD - 0910-2879 2461CD CW18 S-477 - EC200R 14‑17 x 65 EC250 97‑14 66.4 249 66.4 - 0910-0778 2614CD CW18 S-508 B1037 x STD - - - - - - 72 - - - - - - EC250 97‑14 66.4 249 66.4 STD - 824M06640 0912-0106 CW18 S-508 B1037 x - - - - - - 72 - - - - - -