
The RENTHAL 520R1 13/49 chain kit is designed for motocross riders who want a reliable and lightweight transmission without complications. This kit includes a 13-tooth sprocket and a 49-tooth rear sprocket, with the sprocket made of ultra-light aluminum featuring a mud-resistant profile to minimize dirt accumulation between the teeth during cross outings.
The gold/black finish of the chain adds a racing touch to your swingarm, while the mud-resistant sprocket makes maintenance easier between runs. Particularly suitable for the compatible models listed, including the SUZUKI RM-Z 250 (2017‑2019). Installation and adjustment are done like any 520 transmission: check the tension and regularly lubricate the links to maintain longevity and smooth operation.