£46.75 £55.00
Shimano 105 left (non-drive side) crank arm, hailing from Japan and in production during the 1990s (yet still new & unused after all this time). Made from aluminium and weighing in at 255 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike.
OVERVIEW
TECHNICAL INFO
Crank Arm Length - this is measured from the absolute centre of the bottom bracket hole to the centre of the hole for the pedal.
Pedal Threads - the pattern of the thread that your pedals screw into, this is usually stamped on the pedals themselves and most bikes use a standard thread of 9/16” x 20 tpi. The exceptions being older French bikes, bikes with cheaper one-piece type chainsets and Shimano’s Dyna Drive system (easily identifiable as the pedal holes are about an inch wide!).
Bottom Bracket Type - ‘square taper’, as the name suggests have a square shaped axle that slots into the crank and ‘cottered’ axles are round and secured by pins - pretty much every bike up until the 1990s would use one of these, cottered being the much earlier system. Since then, different manufacturers have introduced their own systems that are not interchangeable so you must use a crank that matches.
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