FSA K-Force Light 386Evo Crank

Priced: $377.00 - $580.00
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FSA K-Force Light 386Evo Crank -

The K-Force Light platform is FSA's top component tier, and now they're offering an BB386 EVO version of the crankset. It will fit any of the new crop of bike frames designed around this intriguing new bottom bracket standard. The FSA K-Force Light BB386 EVO Crankset is 26 grams lighter than the SL-K version. Suprisingly, it's also lighter than its BB30 counterpart.

Among the benefits of BB386 is the larger diameter, stiffer spindle. At 30mm, it's the same diameter as a BB30 spindle. The big difference between them is that the BB386 spindle is longer to allow its use in a bottom bracket shell width of 86mm. FSA uses a low speed extrusion to form the 7075 alloy spindle before they machine it to its final shape. It is co-molded into the 5-arm spider on the drive side arm. The composite spider is hollow to save precious extra grams, as are the crankarms. FSA molds a transverse rib into each hollow crankarm. It's an exacting process, but worth it since it increases the torsional rigidity -- you'll appreciate the rock-solid feel when you stomp on the pedals.

FSA employs T-30 Torx internal wrenching alloy fasteners for the chainrings bolts. Though more difficult to produce, this type of hardware ensures that you can torque the fasteners properly without the worry of stripped bolts because of a sloppy interface with the tools. A tight fit and snug fasteners means less power-robbing flex and decreased chance for strange creaking noises to develop.

The FSA K-Force Light BB386 EVO Crankset is a top choice whether you're interested in a standard 53/39t or a compact 50/34t chainring configuration. It has a 3K carbon weave finish on the hollow carbon fiber crankarms. FSA uses bold graphics on the arms to make a visual tie with the Black anodized, CNC machined 7075 aluminum chainrings. They're ramped and pinned to ensure smooth shifting. It's compatible with all 10-speed road shifting systems. We also sell FSA produced Campagnolo 11-speed compatible chainrings which can be fitted to this crankset. Three crankarm lengths are available -- 170, 172.5, and 175mm.


  • 30mm spindle 386 EVO cranksets will fit proprietary 86.5mm 386 EVO bottom bracket shells, 68mm English threaded shells, 68mm PF30 shells, and 68mm BB30 shells


  • Bottom brackets sold separately; BB selection will depend on frame shell interface


  • Length - L170mm, L172.5mm, L175mm


  • Color graphics options - Red, Black


  • For BB30 and PF30 use, you will need a bottom bracket for the chosen standard and a 386 EVO adaptor
  • AL7075 100% CNC chainrings
  • Q-Factor - 147mm
  • AL7075 Torx T-30 alloy chainring bolts
  • Hollow Carbon arms with UD Carbon finsh
  • Available for Sram and Shimano 10 and 11 speed
  • BCD - 110mm ABS
  • 46/36T, 50/34T, 52/36T, 53/39T
Jenson USA
FSA K-Force Light BB386 Evo Crankset.

FSA’s K-Force Light BB386 EVO crankset bids farewell to the traditional symmetrical bolt spacing design in favor of an Asymmetric Bolt Spacing. Uniquely, the new asymmetrical bolt spacing still uses 5 arms, as one is tucked away under the crankarm. Due to the fact that a riders power output isn’t consistent around a circle, the bolt locations are strategically placed where pedaling stresses are concentrated to maximize stiffness without compromising weight. The hollow carbon arms feature a UD finish and hidden bolts and spindle for optimized aerodynamics and a sleek appearance.

As the FSA K-Force Light BB386 EVO is built around a 110 BCD (Bolt Center Diameter), those who prefer to turn over a standard set-up might be shaking their head. However, the K-Force Light BB386 EVO’s ingenious design is able to run both standard and compact rings on the same arm. Riders are no longer required to buy a whole new crankset when in need of a gearing switch-up, as the crank can run 46/36T, 50/34T, 52/36T, and 53/36T chainring combos. FSA’s ABS chainrings have new optimized teeth and shift ramps for superior shifting.

The K-Force Light BB386 EVO’s compatibility surges to the next level as FSA offers bottom brackets that can covert just about any frame to use the 386 EVO spindle, even threaded. The K-Force Light weighs in at 584 grams, with a BB386 spindle, and will include 7075 aluminum chainrings with alloy T-30 Torx chainring bolts, and will compatible with Shimano 11 speed chains. Unlock the door to a world where the four most common road-chainring configurations use the same BCD (110), with the K-Force Light BB386 EVO crankset; the only Crankset you’ll ever need!

Description & Materials.
Crank Weight.
Bottom Bracket Information.
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Pedal Spindle:9/16"

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