Connecting Rod

Restore smooth, reliable engine performance with the PROX Connecting Rod Kit (03.4285). Built from forged steel, this kit is designed for demanding 2-stroke use and is ideal when you’re doing a crank/bottom-end service and want dependable parts you can trust.

Because the kit comes complete with the crankpin, big-end bearing, small-end bearing and washers, you avoid mismatched components and reduce downtime—making your rebuild faster and more accurate.

Key features:

• ✅ Complete kit – includes crankpin, big-end bearing, small-end bearing and washers
• ✅ Forged steel connecting rod – strong, durable material for long-term reliability
• ✅ Easy to install – ideal for scheduled rebuilds and worn rod replacement

Benefits of use:

• 🔹 Improves reliability by replacing critical wear components in the bottom end
• 🔹 Saves time with all essential parts included in one package
• 🔹 Confidence under load thanks to forged construction and correct fit dimensions

Technical specifications:

• 📌 Engine type: 2-Stroke
• 📌 Displacement compatibility: 125 cc / 200 cc / 220 cc
• 📌 Material: Forged Steel
• 📌 Big end bore: 29.00 mm
• 📌 Big end width: 17.00 mm
• 📌 Length: 142.85 mm
• 📌 Center-to-center length: 109.00 mm
• 📌 Pin end bore: 21.00 mm
• 📌 Pin end bore width: 17.00 mm
• 📌 Shaft length: 84.00 mm

Why choose this product?

• ⭐ Quality PROX components for serious engine rebuilds
• ⭐ Complete kit helps ensure correct matching of key parts
• ⭐ Great choice for maintenance intervals and performance-focused repairs