Renthal Twinring Rear Sprocket 520-51t Black
Renthal Twinring Rear Sprocket 520-51t Black
In stock
-
Estimated delivery: Feb 03 - Feb 07
About this product
About this product
The Renthal Twinring™ rear sprocket delivers unparalleled durability and performance for serious riders. Combining lightweight design with exceptional strength, this sprocket is engineered to withstand the rigors of off-road and on-road riding.
Description
The Renthal Twinring™ rear sprocket features a unique two-piece construction. The inner ring is crafted from high-strength Ultralight™ 7075 T-6 aluminum, the same material used in Renthal's renowned standard sprockets. This ensures minimal weight and optimal power transfer. The outer ring is made from electro-less nickel-coated steel, providing ultimate durability and resistance to wear. Designed with a minimal amount of material, the outer ring keeps weight down while maximizing strength. The outer ring is thermally expanded at 200°C before being fitted over the inner ring. This creates an interference fit, and combined with a wave pattern, ensures a permanent bond that lasts the life of the sprocket. Flat socket head screws provide additional strength, especially during side impacts, and prevent contact with the chain guide. Self-cleaning mud grooves between each tooth prevent dirt build-up, reducing chainwheel wear and weight. Expect 3x the lifespan of standard aluminum sprockets while remaining significantly lighter than all-steel alternatives. Upgrade to Renthal and experience the difference!
Features & highlights
- Inner ring crafted from Ultralight™ 7075 T-6 aluminum for maximum weight savings.
- Electro-less nickel-coated steel outer ring provides exceptional durability and wear resistance.
- Interference fit construction ensures a permanent and robust bond between the inner and outer rings.
- Flat socket head screws enhance strength and prevent chain guide interference.
- Self-cleaning mud grooves minimize dirt build-up and reduce wear.
- Significantly lighter than all-steel sprockets, enhancing performance.
- Offers 3x the lifespan compared to standard aluminum sprockets, saving you money.
Technical specifications
- Brand: Renthal
- Product Name: Sprocket
- Mounting Position: Rear
- Tooth Count: 51
- Chain Size: 520
- Material: 7075-T6 Aluminum & Nickel-coated Steel
- Type: Drive
- Color/Finish: Black
Important to know
No additional hardware is included. Please verify fitment for your specific motorcycle model before ordering.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
RENTHAL
1540-520-51GPBK
Sprocket
Rear
7075-T6 Aluminum
520
Drive
Each


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

