Manufactured this headset out of US-produced stainless steel and 7075 aluminum. Each headset is machined in-house to the same high quality standards we apply to all of our products. We engrave our script Phil into each stem cap and hand paint them just like our hubs. Fits 1 1/8" Integrated frame and forks
SPECIFICATIONS
Upper stack height: 15.5 mm
Lower stack height: 13 mm
Bearing availability: 45/45 Standard Phil Spec Bearing, 100% Phil Waterproof grease fill
Headset weight: 144 grams