Shimano 105 FC-R7100 Crankset 52-36T 170mm

The Shimano 105 FC-R7100 Crankset in the 52-36T, 170mm configuration is a 12-speed road cycling crankset engineered for riders who want performance-level shifting and power transfer without stepping into Ultegra or Dura-Ace pricing. The newly designed crank arms offer an optimized balance between lightweight and efficiency, formed with hollow aluminum technology and anodized with a gloss black finish. Built for road use, this crankset suits riders who spend most of their time on flatter terrain or those who prefer a higher top-end gear for descents and fast group rides.

Who Is the Shimano 105 FC-R7100 Crankset Built For?

Shimano offers the FC-R7100 in two chainring combinations, with the 52-36T option aimed at flatter terrain or stronger riders who want higher gearing . This makes the 52-36T version a strong choice for road cyclists, club riders, and racers who ride in areas without extended steep climbs, or who simply generate enough power to make use of the bigger gear range. Riders coming from a compact 50-34T setup and wanting more top-end speed without moving to a full standard crank will find the 52-36T a practical middle ground.

Specification	Detail
Model	Shimano 105 FC-R7100
Crank Length	170mm
Chainring Combination	52-36T
Bolt Circle Diameter (BCD)	110mm Asymmetric
Spindle Interface	Shimano Hollowtech II
Chainline	44.5mm
Q-Factor	148mm
Drivetrain Speed	12-speed
Intended Use	Road
Bottom Bracket	Not included, requires 24mm Hollowtech II compatible bottom bracket

Performance and Ride Feel of the Shimano 105 FC-R7100 Crankset

At the core of the Shimano 105 FC-R7100 Crankset is Shimano’s proven Hollowtech II platform. The guiding principle of Shimano’s Hollowtech II technology is the perfect balance between stiffness, stability, weight and rotational efficiency, aiming to produce a crank that minimises the effort required for the drive and enables more efficient power transmission. On the road, this translates into a crankset that feels solid under power without unnecessary bulk, so sprints and hard accelerations are met with confident, direct energy transfer through the pedals.The large chainring on the Shimano 105 FC-R7100 Crankset uses Shimano’s Hollowglide construction, which shaves weight from the outer ring while retaining the rigidity needed for consistent shifting. The resin ribs on the back of the chainrings are Shimano 105’s unique structural design that achieves both weight reduction and crisp shifting performance. Riders will notice this in the front derailleur’s ability to move the chain quickly and cleanly between the 52T and 36T rings, even under load, which matters when terrain shifts from flat to rolling without warning.Comfort and stability at the pedals come from the crankset’s geometry. The Shimano 105 FC-R7100 maintains a 44.5mm chainline and 148mm Q-factor , keeping the stance consistent with the rest of Shimano’s 12-speed road groupset family. This means the crankset pairs predictably with other 105, Ultegra, and Dura-Ace 12-speed components, giving riders flexibility if they want to mix tiers within their groupset. For those researching complete drivetrain upgrades or replacement parts, browsing the wider range of road components available through Enduroplanet can help identify compatible bottom brackets, derailleurs, and cassettes to complete the build.In terms of durability, the hollow forged aluminum arms are designed to withstand repeated hard efforts without flexing excessively, which keeps power delivery efficient over long rides or repeated climbs. An exclusive forging process allows the production of extremely light crank arms that nevertheless guarantee maximum stiffness, with the fixed connection of the right arm to the bottom bracket axle serving an optimum relationship between stiffness and low weight. This construction gives the Shimano 105 FC-R7100 Crankset a dependable feel whether riding solo, in a group, or in race conditions.

5 Reasons You’ll Want the Shimano 105 FC-R7100 Crankset

• Higher gearing for flatter routes: The 52-36T combination suits riders who spend most of their time on flat or rolling terrain and want more top speed than a compact setup offers.
• Consistent shifting performance: Hollowglide chainring construction and resin ribs work together to keep front shifts crisp even under load.
• Reliable power transfer: Hollowtech II arm construction is built to minimise flex, so effort at the pedals translates efficiently into forward motion.
• Groupset compatibility: The 44.5mm chainline and 148mm Q-factor match Shimano’s broader 12-speed road lineup, simplifying component matching.
• Durable everyday build: Hollow forged aluminum arms with a gloss black anodized finish are designed to handle regular training and race use without sacrificing weight savings.

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