MOTO-MASTER 7075 Aluminium Rear Sprocket (red) for BETA RR, RX, XTRAINER 2005-2026

Name: MOTO-MASTER 7075 Aluminium Rear Sprocket (red) for BETA RR, RX, XTRAINER 2005-2026
Brand: MOTO-MASTER
SKU: 6203623
Price: 48.9 EUR
Availability: BackOrder

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€48.90

Tax Included

On order, lead time confirmed within 24 hours.

MOTO-MASTER 7075 (rouge) aluminium rear sprocket for BETA RR, RX, XTRAINER 125, 200, 250, 300, 350, 390, 430, 450, 480, 498 from 2005 to 2026. Available in 45 Teeth, 46 Teeth, 47 Teeth, 48 Teeth, 49 Teeth, 50 Teeth, 51 Teeth, 52 Teeth, 53 Teeth, 54 Teeth.

The MOTO-MASTER 7075 (rouge) aluminium rear sprocket is designed for BETA RR 125, RR 200, RR 250, RR 300, RR 350, RR 390, RR 430, RR 450, RR 480, RR 498, RX 250, RX 300, RX 350, RX 450, XTRAINER 250, XTRAINER 300 from 2005 to 2026. The rear sprocket is the large sprocket bolted to the rear wheel hub: together with the front sprocket and the chain, it transmits the engine's power to the wheel. Made of aluminium, it weighs much less than a steel sprocket, which cuts unsprung weight and makes the bike feel livelier.

Specifications

Brand: MOTO-MASTER
Manufacturer part numbers: 620362345, 620362346, 620362347, 620362348, 620362349, 620362350, 620362351, 620362352, 620362353, 620362354
Chain pitch: 520
Material: 7075 aluminium (Ergal)
Available versions: 45 Teeth: ref. 620362345; 46 Teeth: ref. 620362346; 47 Teeth: ref. 620362347; 48 Teeth: ref. 620362348; 49 Teeth: ref. 620362349; 50 Teeth: ref. 620362350; 51 Teeth: ref. 620362351; 52 Teeth: ref. 620362352; 53 Teeth: ref. 620362353; 54 Teeth: ref. 620362354
Weight: 400 g

Choosing the right number of teeth

For the same bike, go for the number of teeth of your current sprocket (it's often stamped on it). More teeth on the rear sprocket shortens the gearing: more acceleration, lower top speed. Fewer teeth lengthens it. Even one or two teeth make a clear difference; if you change a lot, the chain length may need adjusting.

When to replace it?

Teeth worn to a point or into a hook shape, worn down on one side only.
Chain that lifts away from the sprocket when you pull it rearwards.
Drivetrain noise, jerkiness or a chain that jumps under load.

Check the sprocket every time you service the chain. Always replace the rear sprocket, front sprocket and chain together: a new part running with worn ones wears out very quickly. Aluminium wears faster than steel, especially in sand and mud.

Fitting tips

Clean the hub and check that it isn't cracked or distorted.
Fit the sprocket the right way round (markings facing out) and tighten the bolts in a criss-cross pattern to the manufacturer's torque, with medium-strength threadlocker if the manual calls for it.
While you're at it, replace the front sprocket and the chain if they're worn.
Set the chain tension as per the manual, with the wheel aligned, then lube it with a suitable chain lube.
Recheck the bolt tightness and the chain tension after the first ride.

Why MOTO-MASTER?

In motocross, Moto-Master was working with the Red Bull KTM Factory Racing team as early as 2010, and it backed the MXGP world championship in 2015. On the technical side, the Flame profile of its discs is designed to improve cooling and go easy on the pads, and its Racing GP sintered pads use a backing plate with hooks (NRS technology) that stops the friction material from coming away.

Spare parts and items to plan

Front sprocket : PBR · RENTHAL
Drive chain : AFAM · RENTHAL
Chain lube : LIQUI MOLY 400 ml · MUC OFF 400 ml

Frequently asked questions

Aluminium or steel?
Aluminium is lighter and works well for motocross and racing. Steel lasts longer: it's the best choice for enduro, sandy terrain or if you put in a lot of hours.

Should the chain be replaced at the same time?
Yes, if it's worn: a stretched chain wears out a new sprocket in a few hours.

Compatibility

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

Reference 620362345

Specific References

Click on your bike to see all compatible parts.

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MOTO-MASTER 7075 Aluminium Rear Sprocket (red) for BETA RR, RX, XTRAINER 2005-2026

€48.90

Tax Included


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MOTO-MASTER 7075 Aluminium Rear Sprocket (red) for BETA RR, RX, XTRAINER 2005-2026

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 7075 Aluminium Rear Sprocket (red) for BETA RR, RX, XTRAINER 2005-2026