Renthal ren121U-420-47GBSI - Rear Grooved Sprocket

Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.

The Renthal UltraLight Rear Chainwheel is a CNC-machined rear sprocket made from 7075 T6 aluminum. Its lightweight construction is engineered to reduce rotating weight while maintaining the strength required for powersports applications. The sprocket is silver and features 47 teeth for the specified 420 chain size.

Computer-engineered manufacturing helps provide precise fitment, concentricity and load dispersion. The tooth profile is designed to support efficient power transfer, while the hardwearing surface treatment helps improve durability. The Renthal rear sprocket fits select Yamaha YZ65 models from 2018 through 2021.

Key Features & Performance Benefits

• 7075 T6 aluminum construction: Provides a high-strength base material in a lightweight design.
• UltraLight design: Renthal states the sprocket is 66% lighter than steel.
• CNC machined: Manufactured to tight tolerances for consistent performance.
• Tooth profiling: Designed to support maximum power transfer and effective load dispersion.

Product Specifications & Technical Data

• Brand: Renthal
• Part number: ren121U-420-47GBSI
• Product type: UltraLight rear chainwheel
• Material: 7075 T6 aluminum
• Chain size: 420
• Tooth count: 47
• Finish: Silver
• Fitment: 2018, 2019, 2020 and 2021 Yamaha YZ65

What's Included

One Renthal UltraLight rear grooved sprocket.

Fitments:
2018 Yamaha YZ65 Base
2019 Yamaha YZ65 Base
2020 Yamaha YZ65 Base
2021 Yamaha YZ65 Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Clearance Item: t
Regular Stock: false
Units Per Sku: 1