The included retainers are engineered for reduced weight

specifically tailored to meet the requirements of high-performance B48 engines

Standard Size is 31

techs are able to remove all built up contaminants

E46 M3 8.5” Metallic Clutch-Flywheel Kit Discs:3-Disc The included retainers are engineeredTilton OT 215 8. 5 Metallic Clutch Flywheel Kit E46 M3 35x10 Designed for serious motorsport use, the Tilton OT 215 8. 5 Metallic Clutch Flywheel Kit is ideal for drifting, track days, and pro touring builds. Compared to 7. 25 clutches, this 8. 5 setup delivers roughly 50% more mass for increased thermal capacitykeeping temperatures in check under extended abusewhile offering higher torque handling and smoother engagement. Kit Contents: OT 215 8. 5