Black RK Chain X-Ring SW428 XSO / 138 - Aprilia SX 125 4T ABS / Beta Alp 125 / FBMondial SMX 125 i / Hyosung GV 125 Aquila - RK

Lubrication chain RK SW428 XSO / 138 - black for Aprilia SX 125 4T ABS (2018-2020) / Aprilia SX 125 4T ABS Euro5 (2021) / Beta Alp 125 (2008-2014) / FBMondial SMX 125 i Supermoto CBS (2017-2020) / Hyosung GV 125 Aquila (2000-2006) / Hyosung GV 125 M Aquila (2007-2008) / Hyosung GV 125 M Aquila Classic Version C (2009-2017) / Hyosung GV 125 S Aquila Euro4 CBS (2018-2019) / Malaguti XSM 125 Supermoto CBS (2019-2020) / Rieju MRX 125 (2002-2010) / Rieju SMX 125 Gussrad (2006) / Rieju SMX 125 Speichenrad (2004-2009) / Rieju SMX 125 Super Motard Speichenrad (2003) / Rieju Tango 125 (2006-2010) / SWM RS 125 R CBS (2017-2020) / SWM RS 125 R CBS Euro4 (2021) / SWM RS 125 R CBS Euro5 (2022) / SWM RS 125 R Factory CBS (2017-2019) / SWM RS 200 R CBS (2017) / SWM RST 125 R CBS (2019) / SWM Varez 125 ABS (2021-2022) / SWM Varez 125 CBS (2022-2023) / UM DSR 125 SM and Supermotard (2018-2020) / Zündapp ZXM 125 ie Supermoto CBS (2018-2021).

Specifications:
- RK is the leading manufacturer of transmission chains for motorcycles in Japan;
- For over 40 years, RK has supplied all renowned Japanese motorcycle manufacturers as original equipment;
- In competitions, RK is the first choice of many teams in MotoGP, motocross, or even the Paris-Dakar Rally;
- RK XSO: This is an improved form of O-ring chains;
- Due to the special shape of the X rings, the chain is sealed at four sealing points, and the lubricant cannot escape;
- Additionally, the X ring serves as an extra lubricant reservoir;
- The chain's lifespan is extended by approximately 30%;
- This technology has been further developed at RK in the XW-Ring chain;
- Chain with X ring;
- Four sealing points;
- Lubricant cannot escape;
- Lifespan is extended by 30% compared to the O-ring chain;
- A further development of the X rings are the XW rings;

Technical data:
Chain pitch: 428;
- Length: 138 links;
- Sealing ring: XW-Ring;
- Manufacturer: RK;
- Type: XSO;
- Execution: Open;
- Tensile strength (kg): 2600 kg;
- Outer link color: Black;
- Inner link color: Black;
- Performance index at rolling: 800;
- Link joining model: Clip joining link;
- Per meter link: JMT.7250788;
- Fits clip joining link: JMT.7250779;
- Fits solid rivet joining link: JMT.7250782;
- Fits hollow rivet joining link: JMT.7250781.

The complete application list can be found below.