12 Gear
12 Gear Ratio Chart for Final Drive Pulleys Transmission Pulley Stock 5-speed Big Twins come with 32-tooth pulleys. Smaller 29, 30, and 31-tooth pulleys provide stronger acceleration, while larger 33 and 34-tooth pulleys reduce engine speed for smoother cruising. For example, a 34-tooth pulley will reduce engine speed by about 240 RPM at 60 mph. Rear Wheel Pulley Smaller pulleys will reduce the engine speed for smoother cruising. Larger pulleys will raise the engine speed for stronger acceleration. 93 Softail models came with 61-tooth rear wheel pulleys. 94 Softail models came with 70-tooth rear wheel pulleys. 95-99 Softail models came with 65-tooth rear wheel pulleys, and Twin Cam 88 Softail models have 70-tooth pulleys. All other Big Twins equipped with rear belt drive units since 80, have 70-tooth rear pulleys. Primary Drive Ratios A primary ratio of 1.54 (24/37 tooth combination) was stock on all Big Twin models from 85-93. A primary ratio of 1.44 (25/36 tooth combination) is stock on all Big Twin models from 94-05. Transmission Pulley Rear Wheel Pulley Secondary Ratio Overall Ratio (1.54 Primary) Overall Ratio (1.44 Primary) 29 70 2.41 3.72 3.48 30 70 2.33 3.60 3.36 31 70 2.26 3.48 3.25 32 70 2.19 3.37 3.15 33 70 2.12 3.27 3.06 34 70 2.06 3.17 3.00 29 68 2.35 3.61 3.38 30 68 2.27 3.49 3.26 31 68 2.19 3.38 3.16 32 68 2.13 3.27 3.06 33 68 2.06 3.17 2.97 34 68 2.00 3.08 2.88 29 65 2.24 3.45 3.23 30 65 2.17 3.34 3.12 31 65 2.10 3.23 3.02 32 65 2.03 3.13 2.92 33 65 1.97 3.03 2.84 34 65 1.91 2.94 2.75 29 61 2.10 3.24 3.02 30 61 2.03 3.13 2.92 31 61 1.97 3.03 2.83 32 61 1.91 2.94 2.75 33 61 1.85 2.85 2.66 34 61 1.79 2.76 2.58 Andrews Final Drive Pulleys Change your final drive ratio with Andrews’ transmission pulleys. Precision-machined from heattreated gear-quality steel. Fit 5-speed Big Twins from 85-06. 85-93 94-06, EXCEPT 06 DYNA 24200 * n/a 29-tooth pulley n/a 24322 30-tooth pulley 24201 * 24323 34-tooth pulley * Spacer and seal included JIMS “Mega” Transmission Pulley Nut for 5-Speed Models The “Mega” nut features a built in lock plate that stays tight even in high-performance application. Fits all 5-speed models from 93-06. 060650 Sold each Transmission Final Drive Pulley Spacer Fits Big Twin models from 85-93 (not shown). 56250 Replaces OEM 33334-85 (sold each) Aluminum Transmission Drive Pulleys by Belt Drives Limited All new lightweight 7075 super strong aluminum transmission pulleys weigh about 1/3 as much as stock pulleys for extended 5th gear bearing life (4-speed pulleys are constructed of 356 aluminum). And lighter weight means more horsepower to the rear wheel. The pulleys are hard anodized for durability. A wide selection of sizes permits fine tuning of final drive ratio. Includes a new spacer, shaft nut, seal and retaining plate with screws. Made in the USA. For Big Twin Models from 85-06 (except 06 Dyna) 42571 29-tooth 42572 30-tooth 42573 31-tooth 42574 32-tooth 42575 33-tooth 42576 34-tooth Fit Sportster and Buell Models from 91-03 42740 28-tooth 42741 29-tooth 42742 30-tooth 12.36
APPAREL SEATS & TOURING Transmission Drive Pulleys for Sportster These transmission drive pulleys are made high grade steel then heat treated to last a long time. A great alternative to the higher price aluminum pulleys. Sold each. Fits Sportster models 04-20 642700 28 tooth. Replaces OEM# 40379-04 642701 29 tooth. Replaces OEM# 40409-04 642702 30 tooth. Replaces OEM# 40380-04 Fits Sportster models 91-03 642703 27 tooth. Replaces OEM# 40288-95 642704 28 tooth. 642705 29 tooth. Replaces OEM# 40205-95 Baker Long Life Sprocket Spacer Seal 624050 Sold each, 94-06 (except 06 Dyna) (repl. OEM 12067A) Baker Long Life Sprocket Spacer 624049 Sold each, OEM 33334-95 Baker Long Life Pulleys, B/T 94-06 (except 06 Dyna) 624045 31-tooth 25 Tooth Drive Sprocket 893492 For Softail models 90-93 and FX/FXR models 85-90 (repl. OEM 40269-85A) Transmission Pulleys for Big Twins Stock style replacement pulleys available with 30, 32 (stock) or 34 teeth. Steel construction. For 5-Speed Big Twins from 85-93 080195 32 tooth (replaces OEM 40210-85B) 080196 34 tooth For 5-Speed Big Twins from 94-06 080198 32 tooth (replaces OEM 40250-94) FOOT CONTROLS HAND CONTROLS LIGHTING ELECTRICAL EXHAUST INTAKE ENGINE GASKETS TRANNY & CLUTCH 1954-E1979 XL MODELS L1979-E1984 XL MODELS L1984-1990 XL MODELS 1936-1979 4-SPEED 1980-1985 4-SPEED 1980-1984 5-SPEED DRIVELINE Premium Transmission Sprockets Precision-machined Americanmade transmission sprockets are plated for corrosion resistance and fully hardened for maximum service and performance. For Big Twins from 36-79 26418 22 tooth (repl. OEM 35203-36) 12226 23 tooth (repl. OEM 35212-73) 12227 24 tooth 12228 25 tooth 12229 26 tooth For Big Twins with 4-Speed Transmissions from 80-85 12220 22 tooth (repl. OEM 33338-83) 12221 23 tooth (repl. OEM 33337-83) 12223 24 tooth For Sportster and K Models 54-79 080119 19 tooth (repl. OEM 35197-52) 12230 21 tooth (repl. OEM 35205-52A) 12231 22 tooth 18335 24 tooth For Sportster Models from 79-84 1For Sportster Models from 84-90 18345 21 tooth (repl. OEM 35208-84) 18346 22 tooth 18347 23 tooth For 5-Speed Evolution Sportster Models from 91-92 18355 21 tooth (repl. OEM 37709-89) 18356 22 tooth 18357 23 tooth Heavy-Duty Transmission Sprockets High-quality imported transmission sprockets provide a lower-cost alternative to our American-made Premium transmission sprockets. Plated for corrosion resistance and fully hardened for maximum service. For Big Twins from 36-79 18365 22 tooth (repl. OEM 33338-83) 18368 25 tooth For Big Twins with 5-Speed Transmissions from 80-84, and 5in4 18369 22 tooth (repl. OEM 33336-83) 18370 Transmission chain sprocket, 23 tooth (repl. OEM 33336-83) 18371 24 tooth For Sportster and K Models 54-79 18382 20 tooth 18379 22 tooth 18381 24 tooth For Sportster Models from 79-84 18372 21 tooth (repl. OEM 35205-79A) 18373 22 tooth For Sportster Models from 84-90 18375 21 tooth (repl. OEM 35208-84T) 18376 22 tooth WHEELS, TIRES & BRAKES FRAMES FORKS & SHOCKS SHEETMETAL INSTRUMENTS & GAUGES LUBRICANTS & CHEMICALS TOOLS & EQUIPMENT for more details check www.custom-chrome-europe.com 12.37
