Renthal ren441U-428-50GPBU UltraLight Rear Chainwheel

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 designed to reduce rotating mass while maintaining the strength required for powersports use. The blue grooved sprocket features a 428 chain size and 50 teeth.

Computer engineering and testing support precise fitment, concentricity, and load dispersion. Tooth profiling is designed to promote efficient power transfer, while the hardwearing surface treatment helps support durability in demanding riding conditions.

Key Features & Performance Benefits

• 7075 T6 Aluminum Construction: CNC-machined from high-strength aluminum for a lightweight rear chainwheel.
• UltraLight Design: Renthal states that the chainwheel is 66% lighter than steel.
• Precision Engineering: Computer engineered and tested for precise fitment, concentricity, and load dispersion.
• Tooth Profiling and Surface Treatment: Designed for power transfer and enhanced resistance to wear.

Key Product Specifications & Technical Data

• Brand: Renthal
• Part Number: ren441U-428-50GPBU
• Product Type: UltraLight rear chainwheel
• Material: 7075 T6 aluminum
• Chain Size: 428
• Tooth Count: 50
• Color: Blue
• Manufacturing Process: CNC machined

What's Included

One Renthal UltraLight rear chainwheel.

Fitment

Fits 2005–2008 KTM 85 SX (19/16) and 2009–2011 KTM 105 SX models.

Fitments:
2005 KTM 85 SX (19/16) Base
2006 KTM 85 SX (19/16) Base
2007 KTM 85 SX (19/16) Base
2008 KTM 85 SX (19/16) Base
2009 KTM 105 SX Base
2010 KTM 105 SX Base
2011 KTM 105 SX 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
Regular Stock: t
Units Per Sku: 1