Odyssey Thunderbolt Crankset - 170mm Left Hand Drive Rust Proof Black. The Thunderbolt+ is Odysseys tried and true Thunderbolt cranks but now features updated graphics. The Thunderbolt+ is one of the most technically advanced crank designs on the market. Due to continued advancements in Odysseys 41-Thermal processing and heat-treatment system fatigue life has been increased by a massive margin.

Proven 41-Thermal processed 4130 chromoly

Laboratory tested and team proven

Traditional sprocket interface

Updated open-ended spindle cap

New wedge cluster band with greater flexibility

Never-Wobble crank arm and spindle interface guarantee