SPROCKETS & CHAIN 203 STANDARD FRONT REAR STEEL ALUMINUM FITS MODEL CHAIN GEARING SIZE PART # SIZE PART # PART # BETA RR 250 05-12 520-120 14/ 52 - - 43 - 1211-15332 RR 350 11-12 520-120 13/ 50 46 - 1211-16483 RR 400/ 450 05-12 520-120 13/ 50 47 - 1211-14391 RR 498 12-13 520-120 13/ 48 47 - 1211-15372 RR 520 10-14 520-120 13/ 18 47 - 1211-19044 RR 500/ 525 05-11 520-120 14/ 50 48 - 1211-16503 48 - 1211-19054 49 - 1211-14411 50 - 1211-14421 50 - 1211-15402 50 - 1211-19074 RR 250 13-18 520-120 13/ 49 - - 41 - 1211-18461 RR 300/ 350 13-18 520-120 13/ 49 41 - 1211-18583 RR/RS 390 15-18 520-120 13/ 49 42 - 1211-18471 RR 400/ 450 13-18 520-120 13/ 50 42 - 1211-18593 RR/RS 430 15-18 520-120 13/ 48 43 - 1211-18481 RR 480 15-18 520-120 13/ 48 43 - 1211-18603 RR 498 13-18 520-120 13/ 48 44 - 1211-18491 46 1210-1739 - 47 1210-1740 - BMW F650 (for models w/ 10.5 17/ 41 - - 41 - 1211-19901 mm bolts) 08-12 47 - 1211-19921 F700 GS 13-18 F800 GS (for models w/ 10.5 17/ 41 - - 41 - 1211-19901 mm bolts) 08-18 47 - 1211-19921 F800 GS Adventure 13-18 S1000 XR 17/45 - - 44 - 1211-19931 45 - 1211-19941 S1000 XR 17/ 45 - - 44 1210-2089 - 45 1210-2090 GASGAS EC/ ECR 125 99-15 520-120 13/ 48 - - 43 - 1211-15332 46 - 1211-16483 47 - 1211-15372 48 - 1211-16503 47 - 1211-14391 48 - 1211-16503 49 - 1211-14411 50 - 1211-14421 50 - 1211-15402 50 - 1211-19074 1 Black 2 Silver 3 Red 4 Blue SPROCKETS ALUMINUM REAR SPROCKETS •The 7075 T651 aluminum we use for these sprockets receives an extra tempering which reduces distortion and provides optimal thickness vs. typically thinner 7075 T6 sprockets •100% machined, no stamping or grinding •Optimal tooth thickness results in maximum tooth and chain contact •We leave the “cleaning” grooves out of our sprockets, because more aluminum contacting your chain means longer chain and sprocket life •Moose Racing rear sprockets come anodized in black; select Moose Racing rear sprockets are available in blue, orange, and red STEEL REAR SPROCKETS •Manufactured from premium-quality C45 high-carbon steel •CNC precision-machined to assure tight tolerances •Machined with lightening holes •Attractive bright zinc-plated finish CHROMOLY STEEL FRONT SPROCKETS •Machined from impact and wear resistant chromoly steel •Inner splines are broached to provide maximum spline-to-countershaft contact – this helps distribute driveline forces over the largest possible area •Heat-treated, then finished with a nickel coating for corrosion resistance and lubricity •BE SURE TO CHECK FOR CLEARANCE WHEN ORDERING SIZES LARGER THAN STOCK
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