The Doppler Endurance crankshaft is a high-quality racing crankshaft designed for sports and mid-race engines reaching up to 15,000 rpm. Built for maximum durability and precision, it features a reinforced full-circle design for improved balance and increased primary compression.

Equipped with a forged 80mm connecting rod and a FAG small end bearing, this crankshaft delivers exceptional reliability and smooth operation even under extreme conditions. Perfect for tuned 50cc and 70cc Minarelli engines.

Features

• Stroke : 39.2 mm (original)
• Connecting rod : 80 mm (forged)
• Small end bearing: 10 x 14 x 13 mm (FAG)
• Piston pin : 10 mm
• Journals : 20 mm
• Max. RPM : 15,000 rpm
• Ideal for Sport and Racing setups

Compatibility : ( Minarelli Horizontal AC + LC, 10 mm piston pin )