EK/JT 520MRD7 13/44 Chain Kit - Standard Sprocket: a chain kit developed for the motocross world, designed for riders seeking a reliable and proven transmission in demanding terrain. Engineered to minimize friction while providing good resistance to traction and abrasion, this kit combines a treated gold-colored chain with a standard steel sprocket for a durability/maintenance compromise suitable for off-road use.
- Color: Gold / Gold
- Pitch: 520
- Number of Links: 106
- Sprocket / Sprocket Dimensions: 13 teeth / 44 teeth
- Sprocket Material: Steel
- Weight: 1.47 kg for 100 links
- Relative Lifespan (100 links): 450
- Manufacturer Reference: Not disclosed
This EK CHAIN kit is aimed at motocross and enduro riders who want a transmission ready for training and amateur competition. The gold finish adds a polished touch to the swingarm, while the chain design reduces friction for smoother operation. Compatible with several models, including the YAMAHA TT-R 250 (2002–2004), it installs like a standard replacement part — check the fit and adjustment before the first ride.
