RK Transmission Kit Open Chain MXU Gold 112-520 48 Tooth Sprocket 13 Tooth Pinion Yamaha YZ
for YAMAHA YZ 125
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FIND YOUR BIKE - compatibility table
-16%
Special Price €119.60 Regular Price €142.00Enhance your motorcycle's performance with our transmission kit, a perfect set of components designed to ensure a smooth and responsive ride. This kit includes an RK chain, a JT sprocket, and a JT rear sprocket, all crafted to provide optimal synergy.
The RK chain, with a pitch of 520 and a length of 112 links, features an O-Ring UW-Ring that ensures lasting lubrication and a tensile strength of 3400 kg. Its open design and gold color, both inside and out, not only add a touch of style to your motorcycle but also guarantee high performance. The constant pitch index of 600 and the clip closure system make installation quick and easy.
The JT rear sprocket, with an inner diameter of 152 mm and 48 teeth, is made from durable steel to tackle the challenges of the road. The PCD of 164 mm and the bolt hole diameter of 8.5 mm, along with the 6 flat-head mounting bolts, ensure excellent stability and compatibility.
Completing the kit is the JT sprocket, available with 13 or 14 teeth and a small snap-on fitting, designed to fit perfectly with your transmission system. With an inner diameter ranging from 17.7 mm to 20 mm, this sprocket offers quick response and optimized power.
- RK Chain:
- Pitch: 520
- Links: 112
- Type: O-Ring UW-Ring
- Tensile strength: 3400 kg
- Color: gold (inside and outside)
- Constant pitch index: 600
- Closure system: clip
- JT Rear Sprocket:
- Inner diameter: 152 mm
- Teeth: 48
- Material: durable steel
- PCD: 164 mm
- Bolt hole diameter: 8.5 mm
- Number of bolts: 6 (flat head)
- JT Sprocket:
- Teeth: 13 or 14
- Fitting: small snap-on
- Inner diameter: from 17.7 mm to 20 mm
| Links | 112 |
|---|---|
| Pitch | 520 |
| Chain | Open |
| Chain Type | MXU |
| Chain Color | Gold |
| Crown Teeth | 48 |
| Crown Inner Diameter | 152 mm |
| Hole spacing | 164 mm |
| Pinion teeth | 13 |
| Pinion Diameter | 17.7/20 mm |
| Pinion Coupler | Small |








