Product Details
Shimano FC-RS520 105 50-34T Front Crankset: Unleash Speed and Precision on the RoadDominate the Road: The Shimano FC-RS520 crankset is your gateway to high-end performance at an affordable price. With a 4-arm design and 2x12 speed 50-34T chainrings, experience smooth and precise shifting like never before. This crankset is compatible with modern disc brake road frames, delivering a winning edge in any race.
Powerful and StylishThe 2-piece crankset features an outboard, 24 mm bottom bracket for added power transfer. Available in multiple crank arm lengths, and the classic black color complements any road bike with a touch of elegance.
HighlightsAffordable and high-end style crankset4-arm crankset for 12-speed drivetrainCompatible with frames of O.L.D. 135 mm and 410 mm chainstay length2-PIECE CRANKSETColor: BlackCrank arm length: 165, 170, 172.5, 175 mmGear combination: 50-34T
Model No: FC-RS520Series: ShimanoColor: BlackRear speeds: 12Compatible chain: HG 12-speedChain line (mm): 44.5P.C.D. (mm): 110Spider/gear arms: 4Chainring combination: 50-34TQ-factor (mm): 150Crank arm length options (mm): 160, 165, 170, 172.5, 175Optional chain guard: Without chain/bash guard2-PIECE CRANKSETCompatible bottom bracket type: OutboardRecommended bottom bracket (Threaded - normal): BB-RS501Recommended bottom bracket (Press-Fit): BB-RS500-PBThreaded bottom bracket shell width (mm): 68 / 70Crank fixing screw included
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
Buy with confidence
In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.
Learn more about our carbon testing.
Expert Servicing & Ongoing Support
Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.
