PBR Steel Standard 2172 - 520 Gearbox output pinionRef : PBR00705A / 1077594005

PBR Standard Steel Sprocket 2172 - 520 (manufacturer part number: 2172 13 18NC) — a replacement sprocket designed for 520 chain transmissions. Drawing from PBR's competition experience, this sprocket features a simple and robust design for standard mounting on roadsters and sportbikes equipped with a 520 pitch.

• Material: 18NCD5 steel alloy, factory quality
• Number of teeth: 13 (13-tooth sprocket)
• Type: 2172, standard version
• Compatibility: 520 pitch chains
• Properties: good resistance to corrosion and abrasion, controlled manufacturing process

Designed to replace the original sprocket without modification, it easily integrates onto the listed roadster motorcycles and many models using the same chain pitch. The choice of 18NCD5 steel ensures stable tooth geometry and predictable wear, appreciated for transmission maintenance. Ideal for riders seeking a reliable standard sprocket that meets manufacturer specifications.

Common fitment examples: YAMAHA YZF-R6 (RJ27 / RJ15) and YAMAHA XJ6 S DIVERSION ABS (RJ22) — check the number of teeth and chain pitch before installation.