Ronstan RC11903 Ball Bearing Car – 70mm Traveller for 19mm Track

The Ronstan RC11903 Ball Bearing Car is a compact and reliable traveller car engineered for use on 19mm Ronstan track systems. With a 70mm body length and recirculating ball bearings, it offers smooth, low-friction operation under load—ideal for mainsheet travellers, jib leads, and custom rigging applications.

Made from marine-grade anodised aluminium, this traveller car is built to withstand harsh sailing environments while delivering precise control for high-performance sail systems.

Features:

• Model: Ronstan RC11903

• Length: 70mm

• Track size: 19mm

• Recirculating ball bearings for low-friction travel

• Marine-grade anodised aluminium construction

• Ideal for mainsheet, jib, and custom traveller systems

Ronstan 19mm Ball Bearing Car 70mm RC11903 Specifications:

• Sail Type    Headsail, Mainsail
• B.L. (kg)    1490
• M.W.L. (kg)    400
• Weight (g)    85
• Track Profile    Ball Bearing
• Length (mm)    70
• Qty. Balls    48
• Width (mm)    47