This Scion xB ACT Xtreme Race 4 Puck Disc solid and sprung hub designs that are highly durable and resistant to heat. ACT 4-puck Xtreme Discs engage harsher, shift faster, and are well suited for the smaller disc sizes from smaller engines.

Available in both Sprung and Solid Hubs, ACT has the Race Disc right for you.

4-Puck Sprung Hub Race Disc (G4)

• Recommended for Road Racing
• Increased Torque Capacity and Spline Life
• Good Durability
• Quiet Operation, Reduced Driveline Shock
• Very Harsh Engagement and Chatter

4-Puck Solid Hub Race Disc (R4)

• Recommended for Drag and Road Racing - Not For Street
• Increased Torque Capacity
• Fastest Shifts, Low Inertia
• Good Durability but Shortened Spline Life
• Harsh Engagement and Chatter

Featured Product

ACT 4 Puck Clutch Discs This Scion xB ACT Xtreme Race 4 Puck Disc solid and sprung hub designs that are highly durable and resistant to heat. ACT 4-puck Xtreme Discs engage harsher, shift faster, and are well suited for the smaller disc sizes from smaller engines. Available in both Sprung and Solid Hubs, ACT has the Race From: $94.84