2021 Parts Unlimited Offroad

ENGINE parts-unlimited.com 2021 PARTS UNLIMITED OFFROAD BOLD MAGENTA part numbers are new for 2021 1060 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 (CONT) 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 # KTM 4‑STROKE (CONT) 520 SX/​EXC 00‑02 95 510 95.0 STD 0903-1161 0910-0787 0912-0134 CW20 - - 525 SX/​EXC 03‑07 x 97.0 2.0 - 0910-0788 0912-0133 11:1 Compression 72 Cylinder boring and replating required for oversizes 520 SX/​EXC 00‑02 95 510 95.0 STD 0903-1162 0910-0789 0912-0134 CW20 - - 525 SX/​EXC 03‑07 x 97.0 2.0 - 0910-0790 0912-0133 12.5:1 Compression 72 Cylinder boring and replating required for oversizes SUZUKI 2‑STROKE JR50 78‑06 41 49 41.0 STD 0903-0926 0910-0339 1614CD CW12 0913-0014 B1000 x 41.5 0.5 0903-0927 0910-0340 0912-0136 37.8 42.0 1.0 0903-0928 0910-0341 - 43.0 2.0 - 0910-0343 1693CD RM60 03‑04 43 60 43.0 STD 0903-0920 648M04300 1693CD CW12 - 0924-0125 *Electrofusion bore ‑ cylinder sleeving x 43.5 0.5 - 648M04350 - or replating required for oversizes 41.6 44.0 1.0 - 648M04400 1732CD 45.0 2.0 - 0910-0344 - RM65 03‑06 44.5 64 44.5 STD 0903-0304 752M04450 - CW12 - 0924-0125 *Electrofusion bore ‑ cylinder sleeving x 45.0 0.5 0903-0538 0910-1235 - or replating required for oversizes 41.6 46.5 2.00 0903-0514 752M04650 - RM65 03‑06 44.5 64 44.5 STD - 0910-0761 0912-0123 CW12 - - Racer’s Choice Single Ring. x CSA Ring is Titanium Nitrided coated 41.6 ArmorGlide skirt coated Electra Coated RM80 77‑81 49 79 49.0 STD - 456M04900 1929CD CW12 S538 B1000 DS80 thru 00 x 49.5 0.5 - 456M04950 1949CD 42 50.0 1.0 - 456M05000 1969CD 50.5 1.5 - - 1988CD 51.0 2.00 - 456M05100 2008CD RM80 83‑85 49 82.87 49.0 STD - - 1929CD CW14 S-288 B1012 x 49.5 0.5 - - 1949CD 44 50.0 1.0 - 497M05000 1969CD 50.5 1.5 - - 1988CD 51.0 2.00 - - 2008CD RM80 86‑87 47.5 82 47.5 STD - 542M04750 1869CS CW14 S-288 B1012 x 49.0 1.5 - 542M04900 1929CS 46.8 49.5 2.00 - 542M04950 1949CS RM80 88 47.5 82 47.5 STD - - 1869CS CW14 S-288 B1012 x 46.8 RM80 89‑90 47.5 82 47.5 STD - - 1869CS CW14 S-288 B1012 *Limited to available stock x 48.0 0.5 - 579M04800 1890CS 46.8 48.5 1.0 - 579M04850 1909CS RM80 91‑01 47.5 82 47.5 STD 0903-0703 645M04750 1869CS CW14 S-517 B1012 Pro‑Lite x 48.0 0.5 0903-0705 645M04800 1890CS *Power Valve must be modified 46.8 48.5 1.0 0903-0707 645M04850 1909CS for .030 and larger 49.0 1.50 0903-0709 0910-1222 1929CS 49.5 2.00 0903-0710 0910-1223 1949CS RM85 02‑20 48 84.7 48.0 STD 0903-0303 806M04800 1890CS CW14 S-288 B1012 Pro‑Lite x 48.5 0.5 0903-0544 0910-1248 1909CS *Must use stock thrust washers 46.8 49.0 1.00 0903-0529 0910-1249 1929CS *Cylinder resleeving or replating required for all oversizes 50.0 2.00 0903-0214 806M05000 1969CS *Crankcase clearance required for 50mm and larger bore diameter RM85 02‑20 52 99.4 52.0 5.00 0903-0294 806M05200 - CW14 S-288 B1012 Racer’s Choice Supermini x 53.0 6.00 - 0910-2878 - CSA Ring is Titanium Nitride coated 46.8 *Must use stock thrust washers *Crankcase clearance required for 50mm and larger bore diameter RM100 03‑04 52.5 99 52.5 STD 0903-0310 651M05250 2067CD CW14 S-288 B1006 *Electrofusion bore ‑ Cylinder sleeving x 53.0 0.5 0903-0181 651M05300 2087CD or replating required for oversizes 45.8 54.5 2.0 0903-0515 0910-0345 2146CD