ProX 0617-0179 (37.910007) Rear Master Cylinder Rebuild Kit

🛠️ Description
Restore firm, consistent braking with the ProX rear master cylinder rebuild kit. Each kit is assembled from high-quality components that meet or exceed OEM performance, giving you a complete solution to refresh worn seals and internals for reliable lever feel and long service life.

✅ What’s Included

• Complete rear master cylinder rebuild kit (model-specific contents)

• Typical components: piston, return spring, primary/secondary seals, dust boot, circlip, washers (contents may vary by model)

✨ Why It’s Good

• OEM-level fit and function

• All necessary parts in one kit—no parts hunting

• Restores pressure, reduces leaks, improves pedal feel

📐 Specs

• Product Type: Rebuild Kit – Master Cylinder

• Mounting Position: Rear (some models note front use; see fitment notes)

• Color/Finish: Black

• Units: Kit

• Riding Style: ATV / Off-Road / UTV / Street

• Package Weight/Size: 0.2 lb | 1.2 H × 5 L × 4.7 W in

• Part Numbers: 0617-0179, 37.910007

🧰 Fitment Highlights (rear unless noted; see notes for front where specified)

• Yamaha:

  • YFM700R Raptor (2014–2025; incl. 2025 700R) – rear

  • YFZ450R (2009–2025) – rear

  • YFM350 Raptor (2005–2013) – rear

  • YFZ450 (2004–2009 rear; 2007–2009 front noted)

  • YFM250 Raptor (2008–2013 front & rear)

  • XT250 (2008–2024) – rear

  • YFM660R Raptor (2001–2005) – rear

  • YZ85 (2002–2021) – rear

  • YZ/WR 125/250/400/426/250F (select years) – rear

  • TTR250 (1999–2006) – rear

  • YFZ350 Banshee (1987–2006) – rear

• Kawasaki:

  • KX65 / KX85 / KX100 / KX112 (2000–2025 ranges) – rear

  • KX250F (2004–2021) – rear

  • KX450F (2006–2021) – rear; KX450X (2021–2023) – rear

  • KX250X (2022–2024) – rear

  • KLX140 / L (2008–2016) – rear

  • KLX250S / SF (2006–2013; 2009–2010 SF) – rear

  • KLX450R (2008–2014, 2016, 2018–2020) – rear

  • KFX450R (2008–2014; also 2015–2016 listing) – rear

  • KDX200/220, KLR650A, KLX300R, KLX650 (select years) – rear

  • KX500 (1988–2004) – rear

• Honda:

  • TRX700XX (2008–2009) – rear

  • TRX450R / TRX450ER (2004–2009, 2012–2014) – rear

  • TRX300EX / 300X (1993–2009) – rear

  • TRX400EX / 400X (1993–2014 ranges) – rear

  • TRX300X (2009) – rear

  • XR250R / XR400R / XR600R / XR650L / XR650R (various 1991–2024) – rear

  • CR80R / CR85R / CR125R / CR250R / CR500R (1987–2007) – rear

• Suzuki:

  • DR-Z400E / S / SM (2000–2017; 2005–2009 SM) – rear

  • DR650SE (1996–2016) – rear

  • RM65 / RM80 / RM85 / RM100 (1990–2014 ranges) – rear

  • RM125 / RM250 / RMX250 (1988–2008) – rear

For exact year/position details, use the notes in the fitment table when publishing (e.g., front usage on certain YFZ and YFM250 models).

🛡️ Warranty
Manufactured to meet or exceed OEM quality; backed by ProX limited warranty against defects in materials and workmanship. Wear/installation damage excluded.