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Sprocket Renthal Ultra-Light Self-Cleaning Aluminium Rear Sprocket 518U - 420

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Renthal Ultra-Light Self-Cleaning Aluminium Rear Sprocket 518U - 420 SprocketRef : RT00383A / 1129513002

Recommended retail price:61,96 €?

55,70 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionRenthal Ultra-Light Self-Cleaning Aluminium Rear Sprocket 518U - 420 Sprocket

Product details :

Features

RENTHAL UltraLight 518U Sprocket - 420 (47 Teeth)

Designed for motocross riders seeking a lightweight and durable part, the RENTHAL UltraLight 518U sprocket is CNC machined in Manchester from 7075 T6 aluminum. Its lightweight construction (up to 66% lighter than steel depending on the material) reduces unsprung mass for a more responsive rear wheel behavior without compromising the rigidity needed for power transmission.

Material: CNC machined 7075 T6 aluminum
Color: silver
Number of Teeth: 47 (pitch 420)
Type: standard, mud profile
Manufacturer Reference: 518U-420-47GPSI

The tooth profile is designed for good torque transfer and uniform load distribution, while the mud profile geometry helps limit dirt accumulation on the teeth in muddy conditions. Ideal for motocross use, it fits 420 pitch transmissions and effectively replaces stock sprockets to enhance the machine's responsiveness.

Common compatibilities: KTM 65 SX (2025), GAS GAS MC 65 (2025) — check fitment on your model before installation.

Technical information :

Reference

RT00383A / 1129513002

No transmission chain

420

Number of teeth (crown)

Type of crown

Ultra-light anti-mud

Number of teeth

47 teeth

Material