Renthal UltraLight Rear Sprocket 428-49T for KTM 85-105 SX, Husqvarna TC85 and GasGas MC85

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, part number ren441U-428-49GPSI, is a high-performance replacement sprocket designed for select KTM, Husqvarna and GasGas youth motocross motorcycles. This 49-tooth rear sprocket uses a 428 chain pitch and a precision-machined aluminum construction to reduce rotating weight while maintaining the strength required for demanding off-road riding.

Renthal CNC machines each UltraLight rear chainwheel from 7075-T6 aluminum to tight manufacturing tolerances. Computer-aided engineering and testing help provide accurate fitment, concentricity and balanced load dispersion. The tooth profile is designed to promote efficient power transfer, while the hardwearing surface treatment helps improve durability during motocross, trail and practice use. Compared with a conventional steel sprocket, the UltraLight design is approximately 66% lighter, helping reduce unsprung and rotating mass.

This silver, grooved rear sprocket fits select 2005-2011 KTM 85 SX and 2009-2011 KTM 105 SX models, along with select 2017-2020 Husqvarna TC85 and 2022-2023 GasGas MC85 applications. Verify the motorcycle year, model, wheel configuration and chain specification before ordering. The sprocket is intended for powersports use and is supplied as one rear chainwheel.

What's Included: One Renthal UltraLight 428-49T rear sprocket.

Features:

• 7075-T6 Aluminum Construction: CNC-machined high-strength aluminum provides a lightweight alternative to conventional steel rear sprockets.
• Reduced Rotating Weight: Approximately 66% lighter than steel to help reduce rotating and unsprung mass.
• Precision CNC Machining: Tight manufacturing tolerances support accurate fitment, concentricity and consistent load distribution.
• Optimized Tooth Profile: Engineered tooth geometry promotes efficient power transfer and dependable chain engagement.

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