PBR Steel Standard 337 - 520 Gearbox output pinionRef : PBR00813A / 1077673002

PBR Standard Steel Sprocket 337 - 520 (Manufacturer's Ref: 337 13 18NC)

Designed for reliability-conscious motocross riders, this PBR sprocket draws on competitive experience. Machined from an 18NCD5 steel alloy, it features a robust tooth design to withstand the demanding conditions of muddy and rocky terrains while maintaining a finish suitable for a 520 chain.

• Material: steel (18NCD5 alloy)
• Number of teeth: 13
• Chain pitch: 520
• Type / version: sprocket 337 – standard
• Manufactured under a strict process to ensure consistency and quality
• Treatment providing high resistance to corrosion and abrasion; designed for durability

This sprocket is designed for motocross use where the demands on the drivetrain are high: repeated starts, gear changes, and lateral stresses. It fits as a standard replacement on factory models compatible with the 520 pitch.

Examples of common adaptations: KAWASAKI KX 125 (KX125M 2008 / KX125L 2002), HONDA CR 250 R (ME03 1985). Please check compatibility with your model and the desired number of teeth before installation.