Bicycle Forks & Headsets — Upgrade Guide for UK Cyclists

The fork and headset work together to connect your front wheel to your frame and allow steering. Whether you're replacing a damaged fork, upgrading to suspension, or servicing a worn headset, understanding the key standards saves time and money.

Fork Types

• Rigid forks — no suspension, lighter and lower maintenance. Ideal for road, commuting, and gravel riding.
• Suspension forks — absorb trail impacts via air or coil springs. Essential for mountain biking; travel ranges from 80mm (XC) to 200mm (enduro/downhill).

Key Fork Specifications

• Steerer tube diameter — 1 1/8" straight is most common; tapered (1 1/8" to 1.5") is standard on modern MTB and many gravel bikes.
• Axle standard — quick release (9mm), 15mm thru-axle (front MTB), or 12mm thru-axle. Must match your hub and frame.
• Brake mount — flat mount or post mount for disc brakes; check compatibility with your caliper.
• Offset/rake — affects handling. Changing fork offset changes how the bike steers, so match carefully to your frame's geometry.

Headset Standards

The headset houses the bearings that allow the fork to rotate smoothly in the head tube. The most important thing is matching the headset to your frame's head tube standard:

• EC (External Cup) — cups press into the head tube; the most common standard on older and budget bikes.
• IS (Internal/Integrated) — bearings sit directly in the head tube; common on modern frames.
• ZS (Zero Stack) — cups sit flush with the head tube; very common on current MTB and road frames.

Always measure your head tube inner diameter and check the manufacturer's spec before buying a headset.

Browse our forks and headsets for compatible options across a wide range of standards.