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FSA K-Force Light 386 EVO Carbon Crankset

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Item # FSA000O

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Item # FSA000O


The K-Force Light platform is FSA's top component tier. The 386 EVO edition was designed for any of the bike frames designed around this new wider bottom bracket standard. For 2014, FSA has updated the graphics to reflect the winning heritage of the K-Force line. 

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 extra effort when you jump for the final sprint.

FSA employs T-30 Torx internal wrenching alloy fasteners for the chainring 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. The K-Force Light Crankset has a 3K carbon weave finish on the hollow carbon fiber crankarms. The 7075 machined aluminum chainrings are ramped and pinned to ensure smooth shifting.

The K-Force Light 386 EVO Carbon Crankset comes in three sizes: 170mm, 172.5mm, and 175mm. Each length is available in Standard 53/39 or Compact 50/34 configurations. They have a Q-factor of 147mm, and are compatible with Shimano and SRAM 10 and 11-speed drivetrains.

Tech Specs

Arm Material:
[arms] carbon fiber, [chainrings] Al-7075 aluminum
Arm Length:
170 mm, 172.5 mm, 175 mm
Chainring Sizes:
[standard] 53 x 39 t, [compact] 50 x 34 t
Bolt Circle Diameter:
110 mm
BB Type:
BB386 compatible
Compatible Components:
SRAM, Shimano 10, 11-speed
Claimed Weight:
584 g
Recommended Use:
road cycling
Manufacturer Warranty:
1 year

Size chart


Crankset/Bottom Bracket compatibility - Road

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Here's what others have to say...

Unanswered Question

is the k force light 386 crank compatable with my Cannondale CAD10 BB30 bottom bracket??

Unanswered Question

Will this work with Shimano 9 Speed?

Avg. ride time: 6h 57m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Will this fit in my threaded bottom bracket?...

Will this fit in my threaded bottom bracket? Does this come with the 386 Bottom Bracket?

Responded on

It looks likes it does not come with a BB since this standard can accommodate multiple BB types. You need to purchase the appropriate BSA threaded BB that is listed in that chart above (assuming it's Bsa and not Italian threading).