Profile's legendary Race Cranks are now available in a No Sprocket Boss version giving them a much cleaner look, with less welded areas to go wrong. You will need to run these with a Spline Drive Sprocket or Spider, apart from that minor drawback for some these cranks are still USA made from 4130 chromoly with a heat-treated, gun drilled hollow, 48-spline spindle so they're still some of the best cranks around without a doubt. They now come with the flush bolt upgrade and hollow spindle as standard, there's also the option at checkout to upgrade to a Titanium Spindle if you want the upgrade. ###section### Product Specs Crank Type: 3-Piece Drive Type: Spline Drive Spindle Diameter: 19mm Drive Side: Left & Right Compatible Includes BB Bearings: No Weight: 786g (27.7oz) ###shogun-image-section### Colour: Black, Raw, Chrome; Size: 170mm, 180mm, 165mm, 145mm, 175mm, 160mm