The Prophecy 4RK Pro Carbon Fiber BMX fork features features carbon fiber legs with chromoly 1-1/8" steer tube and 3/8" aluminum drop outs.
Fit: 20" with 1-1/8" threadless headtube WEIGHT: 26.4oz/748g
Material: Full Carbon crown and legs, aluminum drop out and chromoly steer tube
Drop Outs: 10mm (3/8") aluminum drop out
Steer tube: 1-1/8" chromoly steer tube
Weight Limit: NONE