These urethane rear spring plate grommets are designed not to crunch and "bottom out" as soft rubber grommets do.

These Knobby Grommets have a 50mm (2") inside diameter.

Sold in Pairs

T1 Swing Axle: 45mm Knobby Inner + 45mm Smooth Outer

T1 IRS: 48mm Knobby Inner + 45mm Smooth Outer

T2 Swing Axle >67:  50mm Smooth Inner + 50mm Smooth Outer

T2 IRS 68>: 50mm Smooth Inner + 50mm Smooth Outer

T3 Swing Axle: 48mm Knobby Inner + 48mm Knobby Outer

T3 IRS: 48mm Knobby Inner + 45mm Smooth Inner

Adjustable Spring Plates: 50mm Knobby Inner + 48mm Smooth Outer