TXT Exhaust crankshaft c.48mm Derbi euro 3-4

Crankshaft with a 48 mm stroke TXT Exhaust for Derbi Euro 3 and Euro 4 engines.

The TXT Exhaust 48 mm stroke crankshaft is a racing component developed by RB for Derbi Euro 3 and Euro 4 crankcases without a balance shaft. Its design makes it possible to increase the piston stroke to raise the engine’s effective displacement and adapt it to high-performance builds.

This model features a 48 mm stroke, a configuration designed for tuned engines that require a long-stroke crankshaft. The specific balancing of its 81 mm webs is intended for Derbi D50B0 engines without a balance shaft, contributing to more stable operation of the assembly in racing builds.

The 95 mm connecting rod length and the 20 mm crank pin diameter provide a robust configuration for high-performance engines. Its solid round webs help reduce the free volume in the crankcase, a common feature in builds focused on improving engine response.

Technical characteristics

• Stroke: 48 mm
• Connecting rod length: 95 mm
• Pin diameter: 20 mm
• Web diameter: 81 mm

Compatible models

DERBI

• Euro 3/4 without balance shaft