TRIONLAISA
All symptoms

Rear hops/chatters when backing it in

When your bike shows "Rear hops/chatters when backing it in", these are the most likely causes - ranked by relevance: Rebound, clutch, Backing it in: releasing the brake and clutch. LAISA separates setup causes (adjusters, components) from riding technique.

Short answer for this problem

Recommended starting point
Check first: Shock: Rebound
Most important change
Smallest documented change: 1 click - clicks out from fully closed
Why
Too much rebound pins the rear down - open it so it extends and hovers calmly.
How to test it
Read the current value off the bike and compare it with the recommended one. Write it down before you change anything.
Source
LAISA diagnosis catalogue, drafted automatically and editorially released Methodology
Last reviewed
No review date documented
Pick your bike to apply the fixes directly

The order comes from the stored strength of the symptom-cause link in the catalogue - per symptom, not across symptoms. These are not probabilities and not measurements.

Suspension

Shock: ReboundCheck first

Why this could fit: Too much rebound pins the rear down - open it so it extends and hovers calmly.

How to check it: Read the current value off the bike and compare it with the recommended one. Write it down before you change anything.

Smallest change: 1 click - clicks out from fully closed

Hardware

ClutchCheck next

Why this could fit: Slipper clutch set too tight/loose - back-torque causes the hopping; check its setup.

How to check it: Check the part's condition and that it is properly seated before touching the setup.

Technique

Calculate a setup for my bike

Free. Pick bike, track and riding style.

Related symptoms

Front chatter under hard braking (tarmac)Front pushes on tarmac entryRear steps out on power (tarmac)Understeer on tight kart tarmac

A starting point to verify on the bike - not a safety guarantee. Change one thing at a time and check on track.