The Tank Jump is built to be the premium in headset performance for jumping bikes. Designed to handle the rigors endured by jumping style BMX, freestyle, and mountain bikes, the Tank Jump features upper and lower cartridge bearing assemblies.

Construction: The Tank series uses specially designed hardened chromoly steel cups for supreme durability when landing the perfect jump. Both the top and bottom cups use our proven ACB sealed cartridge bearings.

Features:
11/8 inch (28.6mm)
Hardened chromoly steel cups
Bearings sealed cartridge bearings with low drag neoprene bearing seals, oversized heavy duty lower bearing
Upper stack height: 15.6mm
Lower stack height: 12.8mm
Total stack height: 28.4mm
Weight: 284g