Suspension Sag Setup

Enter your measured free sag and race sag to check if your spring preload is correct. Proper sag sets the baseline for all other suspension adjustments.

Targets for: Street / Standard

Rear Race Sag

30 mm–40 mm

Front Race Sag

30 mm–38 mm

Rear Free Sag

10 mm–25 mm

Front Free Sag

10 mm–25 mm

Rear Suspension

Good — No adjustment needed.

Good — No adjustment needed.

Front Suspension

Good — No adjustment needed.

Good — No adjustment needed.

How to Measure Sag

1

Find a reference point

Rear: axle to a fixed point directly above it (fender, subframe). Front: axle to a mark on the fork leg.

2

Measure fully extended

Put bike on paddock stand or lift so wheels are off the ground. Record measurement (L1).

3

Measure free sag

Let the bike sit on its wheels with no rider. Push up gently then release. Record measurement (L2). Free sag = L1 − L2.

4

Measure race sag

Rider sits in full gear in normal riding position. Assistant holds bike vertical. Push down then release gently. Record (L3). Race sag = L1 − L3.

5

Adjust preload

If race sag is too high (soft): increase preload. Too low (stiff): reduce preload. Recheck after adjustment.

Key Principles

• Race sag is the primary setting. Get this right first before touching damping.

• Free sag too low (near 0): spring is too stiff for your weight — you need a softer spring, not just less preload.

• Free sag too high (>25–30mm): spring is too soft — needs a stiffer spring rate.

• Preload only changes the static ride height — it does NOT change spring rate or damping characteristics.

• Set sag before adjusting clicker damping settings.