PULLEY SIZE VS. BOOST
SC Pulley
7.5" Crank (stock)
9.0 Crank
Boost
Ratio
3.50"
10.0
2.14
14.5
2.57
3.25"
11.5
2.31
16.5
2.77
3.00"
13.5
2.50
18.5
3.00
2.75"
15.5
2.73
21.0
3.27
2.50"
17.5
23.0
3.60
