Arrow Precision Engineering Billet Steel Crankshaft, Narrow Journal – TR2-4, Morgan +4

Billet steel crankshaft suitable for TR2-4A & Morgan +4 designed by Racetorations and manufactured in the UK by the world renowned Arrow Precision Engineering. Narrow journal big ends to reduce rotating mass, required connecting rods can be found under BEN201C-SET or BEN201D-SET. This latest version is 500g lighter than the standard item and over 300g lighter than any previous Racetorations crankshaft.
Both the centre of the crankshaft and the big ends have been hollowed to reduce the rotating mass further while also increasing strength. The crank also includes dummy mains. See BEN206 or BEN208 for the flywheel. The rear flange incorporates an 8-bolt flywheel fixing, see BEN242 for bolts. Each crankshaft is supplied with an individual data sheet outlining dimensions and weights specific to that particular crank. Max RPM: 8000.

This latest design of our billet steel crankshaft incorporates a modified rear flange to enable the use of a single piece rear seal replacing the original split type for a modern high performance seal. The seal kit can be found under BEN247.

Crankshaft can be supplied with or without superfinishing polishing process, this high quality finish reduces rotational drag, and increases fatigue life. Derived from the pinnacle of motor sport technology and used in most Racetorations engines. Select this product and the process will be completed before delivery.