Sunstar Rear Sprocket 51T Black KTM 2017-2019 5-354751BK

A rear sprocket is fundamental to your drivetrain's efficiency—it directly impacts acceleration, top-end speed, and chain longevity. The Sunstar 51T delivers measurable gains through precision engineering and material science, not marketing promises. If you're serious about extracting maximum performance from your KTM, this is the upgrade that matters.

The 7075 T-6 aluminum construction provides the strength-to-weight ratio necessary for consistent power delivery under racing conditions. Computer-optimized weight reduction holes lower rotational mass without sacrificing structural integrity, translating to quicker throttle response. The exclusive tooth-valley design increases chain contact area by 50%, which reduces wear on both sprocket and chain while improving power transmission efficiency. Hard anodized coating resists corrosion and abrasion in high-stress environments, while integrated cleaning grooves minimize debris buildup and extend component lifespan.

• 51T tooth count
• 7075 T-6 aluminum
• Hard anodized black finish
• Lightweight design
• Computer-optimized weight holes
• Enhanced tooth-valley geometry
• 50% increased chain contact
• Self-cleaning base grooves
• KTM 2017-2019 fitment
• Bolt-on installation
• MPN: 5354751BK