All Evolution Industries Starter Ring Gears Are Manufactured From Aircraft Quality Steel, Heat Treated and Ground Per Evolution Industries Specifications to Insure Maximum Strength. All Are Designed To Fit Stock OEM Baskets and Evolution Industries Baskets.

All Evolution Industries Ring Gear Conversion Kits Are Manufactured From Aircraft Quality Steel, Heat Treated and Ground Per Evolution Industries Specifications To Insure Maximum Strength. All Are Designed To Fit Stock OEM Clutch Baskets.

All Evolution Industries Ring Gears and Starter Jackshaft Kits Are Manufactured From Aircraft Quality Steel, Heat Treated and Ground Per Evolution Industries Specifications To Insure Maximum Strength. All Are Designed To Fit Stock OEM Clutch Baskets.

Evolution Part Numbers are as follows:
 
EV:1010-3031 Special Ring Gear Bolts (Pack Of 6) For EV:1010-1261 Only.

EV:1010-3041 Special Ring Gear Bolts (Pack Of 6) For EV:1010-1521 Only.

EV:1010-3021 Evolution Industries Ring Gear Replacement Bolts. Except EV:1010-1261 and EV:1010-1521 (Pack Of 6).