Heavy Duty External Cup Headset

• Forged chromoly lower cup
• 12mm Deep Cup 6061/T6 upper cup
• Super oversized japanese Sealed lower bearing
• FSA ACB 36/36 upper cartridge bearing
• Forged chromoly crown race
• Gyro compatible
• Laser etched aluminium top cap
• FSA Part Number 141-2005

Not sure if this is the one you need?
Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/