JT. Aluminium Ultra-Light 251 - 520 SprocketRef : JTC00515A / 1096568005

The JT Sprockets JTA251.52BLK sprocket is a transmission part designed for demanding uses in motocross and roadster applications. Made from aerospace-grade 7075-T6 aluminum (Ergal), this "ultra-light" sprocket combines strength and lightness while maintaining a neat finish for off-road conditions.

• Manufacturer reference: JTA251.52BLK
• Material: 7075-T6 Aluminum (Ergal)
• Color: Black
• Number of teeth: 52 (520 pitch)
• Type: Standard
• Finish: "Anti-mud" treatment to limit dirt accumulation and facilitate the ejection of debris

Designed to be mounted on a 520 pitch transmission, this sprocket is aimed at riders looking for a robust part that can withstand the demands of off-road riding while keeping unsprung weight in check. It integrates easily during a replacement or gearing change and pairs particularly well with motocross and roadster machines — frequently associated models include: YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), and GAS GAS EC 300 F (2015).

Strength, assembly ergonomics, and anti-mud finish summarize the essence of this JT Sprockets sprocket: a reliable technical solution for maintaining the chain and achieving a clean and durable transmission.