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YAMAHA YZ125 2021

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Guaranteed to fit Exact year selected

Browse parts for your YAMAHA YZ125 2021. Find maintenance essentials and replacement parts matched to your selected bike, or filter by part type to find what you need.

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Filter by part type
BRAKE LEVER
£20.79
The part most likely to need replacing after a get-off.
EXHAUST
£196.88
The upgrade that lets every other part breathe properly.
EXHAUST
£272.74
The upgrade that lets every other part breathe properly.
FORK BUSHING KIT
£55.63
The unseen part that decides how planted your front end feels.
FORK SEAL AND WIPER SET
£36.97
Smooth, predictable forks, restored in one afternoon.
FUEL TAP REPAIR KIT
£19.06
The cheap fix for an annoyingly common leak.
OIL SEAL SET
£49.88
The unglamorous parts that keep everything else properly sealed.
BIG BORE GASKET (TOP)
£58.00
Don't let a two-pound gasket undo a two-hundred-pound power upgrade.
GASKET SET (TOP END)
£20.88
The seal that makes sure the rest of the job holds.
WATER PUMP KIT
£29.09
Don't cook your top-end rebuild - fix cooling first.
LINKAGE BEARING KIT
£75.11
Smooth rear travel starts with the bearings that make it possible.
MASTER CYLINDER REBUILD KIT (FRONT)
£29.48
Fix it before it fails you mid-lap.
MASTER CYLINDER REBUILD KIT (REAR)
£26.07
Confidence at the rear pedal, restored from the inside out.
GEAR LEVER
£23.95
Positive gear changes, restored in minutes.
FOOTPEGS
£95.70
The contact point that decides how connected you feel to the bike.
STEERING BEARING KIT
£31.47
Smooth, confident steering starts at the head bearings.
SPARK PLUG
£15.78
Cheap insurance, fitted while everything else is open.
PISTON KIT (BIG BORE) YAMAHA YZ125 2017-2026 144CC ATHENA
£160.00
The piston that makes the most of your bigger bore.
PISTON KIT
£168.79
Restore your power in an afternoon.
CLUTCH KIT
£147.34
Most riders replace the full kit, not just one worn plate.
CLUTCH FRICTION PLATES
£90.20
The part behind almost every clutch slip complaint.
CLUTCH STEEL PLATES
£34.78
The other half of a proper clutch fix.
CLUTCH SPRING KIT
£26.38
Sometimes all a slipping clutch needs is fresh springs.
REAR SHOCK BEARING KIT (LOWER)
£22.10
A small bearing with a big say in how the rear end feels.
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