MOTO-MASTER Ultralight Front Sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 2001-2026

Name: MOTO-MASTER Ultralight Front Sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 2001-2026
Brand: MOTO-MASTER
SKU: 61033111
Price: 17.9 EUR
Availability: InStock

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€17.90

Tax Included

Stock del proveedor, enviado en 2 a 5 días.

MOTO-MASTER front sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 from 2001 to 2026. Available in 12 Teeth, 13 Teeth.

On TM RACING EN 125, EN 144, MX 125, MX 144 from 2001 to 2026, the MOTO-MASTER front sprocket fits in place of the original part. Mounted on the gearbox output shaft (countershaft), the front sprocket passes the engine's torque on to the chain. Every tooth is loaded on every turn of the wheel: a worn front sprocket makes the chain jump and speeds up wear on the whole drivetrain.

Specifications

Brand: MOTO-MASTER
Manufacturer part numbers: 610331112, 610331113
Chain pitch: 520
Material: steel
Available versions: 12 Teeth: ref. 610331112; 13 Teeth: ref. 610331113
Weight: 140 g
Engine: 2-stroke

Choosing the right number of teeth

Start from the stock number of teeth. One tooth less on the front sprocket shortens the gearing (more acceleration, ideal on tight terrain); one tooth more lengthens it (more speed on fast tracks). One tooth on the front sprocket is worth roughly three to four teeth on the rear sprocket.

When to replace it?

Teeth thinned, pointed or hooked.
Chain that jumps or slaps under acceleration.
Play between the sprocket and the shaft, or marked splines.

Check it every time you service the chain and replace it along with the rear sprocket and the chain. Many riders change the front sprocket with every new chain, because it wears much faster than the rear sprocket.

Fitting tips

Loosen the sprocket nut or bolt while holding the rear wheel with the brake, before slackening the chain.
Clean the countershaft and check the oil seal behind the sprocket.
Fit the sprocket the right way round, with a lock washer or threadlocker as on the original assembly, and tighten to the manufacturer's torque.
Set the chain tension and lube it with chain lube.

Why MOTO-MASTER?

Moto-Master is a Dutch brand founded in 1997 by Gaston Vernon that specialises in braking: discs, sintered pads and oversize kits. Its discs are designed in CAD and then laser-cut on CNC machines, with manufacturing in the Netherlands and ISO 9001:2015 certification.

Spare parts and items to plan

Rear sprocket : MOTO-MASTER 6201934 · MOTO-MASTER 6201932
Drive chain : RENTHAL · RENTHAL 520
Chain lube : LIQUI MOLY 400 ml · SCOTTOILER

Frequently asked questions

Should the rear sprocket be changed too?
If it's worn, yes: a new front sprocket running on a tired rear sprocket and chain is worn out within a few hours.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Reference 610331112

In stock5 Items

Specific References

Click on your bike to see all compatible parts.

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MOTO-MASTER Ultralight Front Sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 2001-2026

€17.90

Tax Included

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MOTO-MASTER Ultralight Front Sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 2001-2026

Specifications

Choosing the right number of teeth

When to replace it?

Fitting tips

Why MOTO-MASTER?

Spare parts and items to plan

Frequently asked questions

Compatibility

MOTO-MASTER Ultralight Front Sprocket for TM RACING EN 125, EN 144, MX 125, MX 144 2001-2026