Wolf Tooth "Premium" MTB Headset Top Cup - EC34/28.6 - 25mm Stack
- Weight : 0.07kg / 0.15lbs
- Packaging Unit: 1 Set
- Product ID (PID): 39419
- Product safety
Weight
Source: BMX Glossary
Printed: 11/05/2026
The Wolf Tooth "Premium" MTB Headset Top Cup - EC34/28.6 - 25mm Stack is the top half of the Wolf Tooth Premium headset for frames with external cups (EC34: 34 mm head tube inner diameter on top) and a fork with a 1 1/8 inch steerer, machined from 6061 aluminium in Minnesota. Wolf Tooth sells top and lower cups separately, so you replace only the half your frame needs and mix colours freely. Inside is an Enduro stainless steel bearing with a lifetime warranty, an O-ring on the steerer and a lip seal over the bearing keep water out. The stem cap with integrated 5 mm spacer, the aluminium bolt and a star nut are included; a carbon steerer needs a compression plug instead of the star nut. The medium 15 mm top cover gives a 25 mm stack including the 10 mm cup, for everyone who wants the bar higher without stacking spacers.
Facts: Wolf Tooth "Premium" MTB Headset Top Cup - EC34/28.6 - 25mm Stack
- Material: Aluminum 6061, CNC machined
- Size: 1-1/8" (28.6mm), EC34/28.6 (external cup, 34 mm head tube), 15 mm cover = 25 mm stack incl. 10 mm cup
- Bearing: Enduro stainless steel cartridge bearing, sealed, 36 x 45 degree bevel, lifetime manufacturer warranty
- Scope of Delivery: 1 headset top cup with bearing, stem cap with integrated 5 mm spacer, aluminium bolt, star nut
- Extras:
- O-ring on the steerer and lip seal over the bearing
- star nut for steel and aluminium steerers only, a carbon steerer needs a compression plug
- stem cap bolt torque 2-3 Nm
- top and lower cups sold separately
- matches the Wolf Tooth EC34/30, EC44/40 and EC49/40 lower cups
- weight 70 g (manufacturer)
- made in the USA
