Evolution Catalog (2026)

Derby Cover Spacer & VPP by AIM Needed When using the Variable Pressure Plate (VPP) by Aim offers additional clutch capacity by using centrifugal weights that fly out while riding and increase clutch spring pressure for greater horsepower capacity. Available for Evolution Industries Stage-1 Clutches.

Part Number 1015-4001 1015-4003 1015-4007

Application

Description

’98 & Later Evo-Ind Stage-1 Clutch ’99-’17 Big Twin (5-Hole Derby) ’17&Later M8/Low Pro Primary

Variable Pressure Plate 0.500” Derby Spacer Kit 0.500” Derby Spacer Kit

1015-4003

MTC Engineering Multi-Stage Clutch Basket

This new clutch called the “Gen II Multistage Clutch” is designed and built with the same robustness that MTC has used for over 40 years in making the best products in the racing industry. This clutch significantly reduces clutch lever efforts and yet improves clutch adjustability through its “multistage” technology. The new innovative design runs on engine RPM and demonstrates a quicker reaction time and more repeatability between passes. The new design also allows for easier dynamic spring replacement with its quick access cover plate over the springs. *Will Require Primary Cover Modification or Replacement as well as a modified Black Ops Clutch Basket and drive hub.

1006-3170

Part Number 1006-3170 1006-3171 1013-2501 1013-2502

Application

Description

’07-Present Big Twin (Also’ 06 Dyna) ’98-’06 Big Twin (Expect ’06 Dyna) ’07-Present Big Twin (Also’06 Dyna)

Complete MTC Clutch Basket Assembly Complete MTC Clutch Basket Assembly

Replacement Clutch Pack Replacement Clutch Pack

’98-’06 (Except ’06 Dyna)

*Lock-Up Hat Sold Separately*