Andrews pinions for Sportster 4-speed gearbox

These sprockets fit all 4-speed Sportsters from 1956 to 1990. The sprockets are made from high-nickel steel, heat treated and shot peened for maximum durability. With shot peening properly applied, wear resistance is significantly increased, especially in the corners of the teeth and their corresponding recesses.
 
 OPEN OR CLOSED RATIO SPROCKETS FOR 4-SPEED SPORTSTER
 The 1st gear ratio in the open ratio kit changes from 2.52 to 2.68 for more output with a 21 or 22-tooth transmission output sprocket. "C" denotes closed ratio; with one of these gearboxes you will have a genuine competition-style gearbox for your 4-speed Sportster. For easy comparison, we have published a table with all the ratios.
 
 "W"-1 is open ratio 1st in combination with standard main sprocket (27/17 teeth)
 "W"-2 is open 1st gear ratio in combination with main sprocket "C" (26/18 teeth)


Specifications


Pack
1


HS Code
8714102000


Origin
US


Motorcycle family
Sportster