Sonnax heavy duty "E" clutch hub is crafted from forged 4000-series aluminum, the same material used for high performance engine pistons. The Sonnax billet hub features a far superior yield strength versus the OE hub, so you can rest easy knowing it will stand the test of time — no more worrying about comebacks due to a failed OE hub.

• High-strength, forged hub eliminates spline failure
• Improved material significantly increases "E" clutch durability