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FSA K-Force Carbon Cranksets

2.08/5

(48 Reviews)

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MSRP : $500.00

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Product Description

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.

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Value Rating:

Submitted by Scott V.

Date Reviewed: May 21, 2013

Strengths:    It's carbon, light, looks great, feels nice when using.

Weaknesses:    I live near FSA customer support. Before this I had the SL-K which was carbon over aluminum. The rings are nice but the unit as a whole is junk.

Bottom Line:

I don't plan on using any FSA chainsets in the future. This unit was crap. When I tried to get it straightened away, FSA tech support told me I had it all wrong and that I was assembling it wrong!!! It turns out, which I had to determine MYSELF, that the aluminum piece at the arm-center that connects to the spindle had separated from the carbon arm. This caused a repeatable 1mm shift of the arm forward every time it was reloaded by pedaling. Crap! I was totally insulted by the WORTHLESS tech support at FSA and they are virtually in my own neighborhood. They are not earning their pay. They are are not qualified in the least to support the product. They exhibit an inability to troubleshoot, they're irritable, and they are rude. They have no business providing tech support whatsover. I never asked for anything but some troubleshooting guidance and discussion of KNOWN issues. They failed on all accounts. Some young whipper-snapper talking to me like I was born yesterday! I was riding road bikes long before they were even born. If you would like to add insult to likely injury, buy one of these and when it fails, call FSA tech support. They could not have been ANY WORSE. I bought a Shimano chainset and couldn't be happier at a fraction of the bling...the engineering is there - it is designed to stay together and not let you down. The SL-K I rode for at least 15k miles with plenty of maintenance. The K-force was unusable after 500 miles.

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Submitted by LoneSharkie

Date Reviewed: December 30, 2012

Strengths:    Looks.
Worked well for about 7k miles.

Weaknesses:
Not as stiff as high-end aluminum cranks.
Broke at 7k miles.

Bottom Line:

Any one have any luck getting replacement arms or a full crank replacement from FSA? I would avoid, as my crank also succumbed to pedal insert cracking/breaking issue from a not so hard snap out. Is it worth even trying to deal with FSA?

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Submitted by ray

Date Reviewed: May 28, 2012

Strengths:    light weight

Weaknesses:    product failed

Bottom Line:

As others have noted, the crank design is weak and fails--on mine the left crank pedal insert just worked itself loose from the carbon crank arm. Haven't called FSA yet, but from other comments I am not holding my breath. I have never had a problem with an alloy crank loosing a pedal. I hope FSA service has some integrity and recalls/fixes this design flaw. I will never buy another FSA product if they don't fix their flaws, warranty or not!

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Submitted by tonypet69 a Road Racer

Date Reviewed: November 1, 2011

Strengths:    Excellent power transfer, precise shifting, lightweight, A looker, Great bottom brackets

Weaknesses:    I guess the alloy plating on the fairing of the big chainring. Which is starting to build up salt.

Bottom Line:

Great product, I have nothing but good words for FSA cranks. stiff, light, aesthetics, durability, great bearings, reliable shifting. I never turned back since I started with my first set which is the Gossamer, then the Carbon Pro team Issue, I have a k-Force light as well and a K-Force on my mtb.

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Favorite Ride:   Santiago Canyon

Purchased At:   Colorado Cyclist

Similar Products Used:   Shimano Tiagra, Duraace, Deore, Deore XT

Bike Setup:   Bianchi B4P 928 lugged, Full Duaraace 7900 except for the K-Force cranks and brakes. ITM 101 cockpit an post, San Marco Aspide saddle, Mavic R-Sys wheels, Continental GP tires

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Submitted by 3djock a Road Racer

Date Reviewed: January 10, 2011

Strengths:    none

Weaknesses:    weak on the left side crank mount wears out to quickly and becomes loose after time. Tend to flex and creak quite a bit..

Even had problem with alignment of the chain rings which was due to bad production.

Bottom Line:

I have gone thru to sets of these in the past 2 years they are garbage period. The left side crank even after their recommendation how 2, came lose and failed twice. They need to go back and re engineer these things if they want to keep customers in the near future. Would not recommend to anyone.