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Shimano

Shimano FC-R7100 105 2*12 Speed Crankset 52-36T 165mm Length Hollowtech II Bulk

Shimano FC-R7100 105 2*12 Speed Crankset 52-36T 165mm Length Hollowtech II Bulk

$145.99 USD
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SHIMANO 105 FC-R7100 12-SPEED ROAD CRANKSET
HOLLOWTECH II DESIGN — 165MM SHORT CRANK ARMS / 52-36T MID-COMPACT GEARING
Maximize your pedaling efficiency and aerodynamic advantage with the Shimano 105 FC-R7100 12-speed crankset. Featuring 165mm short crank arms, this setup reduces hip flexion at the top of the pedal stroke, allowing for a more aggressive tuck position with improved cadence consistency. Paired with a versatile 52-36T mid-compact chainring setup, it provides the perfect blend of top-end sprinting speed and efficient climbing gearing.
FEATURES
  • Short 165mm Arm Length: Opens hip angle for increased biomechanical efficiency, smoother high-cadence pedaling, and reduced knee strain.
  • Mid-Compact 52-36T Gearing: Offers ideal gear ratios for high-speed flats, competitive group rides, and steep elevation gains.
  • Hollowtech II Hollow Forging: Advanced aluminum hollow-arm structure delivers optimal power transfer with minimal weight penalty.
  • Optimized for 12-Speed HG Chains: Specially profiled chainring teeth ensure instantaneous, precise front shifting under heavy acceleration.
  • Sleek Gloss Black Anodized Finish: Matches perfectly with Shimano 105 R7100 and Di2 drivetrain components.
  • OEM Bulk Packaged: 100% genuine, factory-fresh Shimano component delivered in cost-effective workshop bulk packaging.
  • Brand: SHIMANO
  • Series: 105 R7100 Series
  • Model: FC-R7100
  • Crank Arm Length: 165 mm
  • Chainring Combination: 52-36T (Mid-Compact)
  • Drivetrain Compatibility: 2x12-Speed
  • Spindle Interface: HOLLOWTECH II (24mm spindle)
  • Bolt Circle Diameter (BCD): 110 mm (Asymmetrical 4-Arm)
  • Chainline: 44.5 mm
  • Q-Factor: 148 mm
  • Recommended Bottom Bracket: SM-BBR60 (Threaded) / SM-BB72-41B (Press-Fit) — *Sold Separately*
  • Packaging: Genuine Shimano Workshop / Bulk Packaging
Q: What are the benefits of using 165mm short crank arms?
A: 165mm short cranks open up your hip angle at the top of the pedal stroke, reducing impingement and allowing you to maintain an aggressive aerodynamic position comfortably while spinning at higher cadences.
Q: Does this crankset include a bottom bracket?
A: No, bottom brackets are sold separately to allow riders to select the correct interface for their frame shell (e.g., SM-BBR60 or SM-BB72-41B).
Q: Is this an authentic Shimano product?
A: Yes, it is 100% authentic and brand-new Shimano stock supplied in OEM workshop bulk packaging without retail boxing to offer maximum value.
  • Processing Time: Ships within 24–48 hours from our California warehouse.
  • Delivery Time: Standard shipping usually arrives within 3–7 business days across the US mainland.
  • Tracking: Tracking information will be emailed immediately once your package is dispatched.
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