RENTHAL 520R1 13/51 standard chain kit - ultra-light mud-resistant sprocket (manufacturer reference: 484405): a set designed for Cross practice where lightness and reliability are essential. This kit combines a 520 R1 chain in gold/black finish with an ultra-light aluminum sprocket featuring a mud-resistant profile to limit the accumulation of dirt and sludge between the teeth.

Designed for off-road use, it is suitable for motocross machines that require a simple and robust transmission without sealing devices. Its configuration:

• Pitch: 520
• Chain type: RENTHAL R1, standard quality
• Type of seals: no seals (non-sealed)
• Sprocket: aluminum, ultra-light, mud-resistant profile
• Color: gold/black chain
• Teeth: 13/51

The assembly provides a neat look thanks to the gold/black contrast and helps maintain a reduced weight due to the aluminum sprocket. Ideal for motocross riders looking for a transmission kit suited for muddy conditions and regular maintenance. Compatible — among others — with Yamaha YZ 250 F (2011-2013).

Always check the proper adjustment and condition of the sprocket and chain before heading out, and adhere to the recommended wear checks to ensure safety and longevity.