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FSA Afterburner Modular 1x Crankset

Average User Rating: (Very Good)
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great lightweight chainset with adjustable chainline

Rating: Featured Member Review
The Good:

-pretty cheap
-pretty light
-adjustable chainline for boost and non boost compatibility
-30 mm axle
-direct mount chainring
-look good
-anodizing has lasted well
-chain retention is excellent

The Bad:

-Proprietary tool for bottom bracket is another tool to buy but luckily the park tool one also fits shimano BBs. -Proprietary tool to change the chainring which I don't have
-direct mount chainring spline thats incompatible with race face or sram fitments. i think it's the same as cannondale hologram cranks but either way requires another tool and there's very little choice when it comes to replacement chainrings. -the self extracting plate came loose on one of my first rides and is difficult to tighten with a pin spanner without scratching as it is a soft allow material. -didn't come with pedal washers
-10mm allen hardware, so good luck if your cranks come loose on a ride.

Overall Review:

I got these as I didn't like that shimano cranks our not direct mount and wanted something 3rd party to go with my shimano drivetrain. FSA get a tough rep sometimes but I think these are a great alternative to more common options, despite a few gripes.

They were pretty cheap are pretty light and really stiff with the 30mm axle. They require their own BSA compatible BB which requires its own tool but has been smooth, creak free and reliable so far. 

They also have an adjustable chainline making them compatible with boost and non boost frames which is really handy but there is another proprietary tool needed to remove the lockring to change the chainring or chainline. I find this really annoying as it's just another tool to buy or borrow and they could have used something more common like an order style BB tool or something. there is a proprietary fitment for the direct mount chainring which also means there are next to no aftermarket chainring options as well. 

that said Chain retention on the FSA chainring has been excellent. Running these on my transition sentinel without a guide and i'm yet to drop a chain. The anodising and general appearance has been good after a few crank strikes and some shoe rub. They feel like they have a slightly wider q factor than the shimano xt m8000 cranks on my hardtail but i'm not sure if that just a feeling. 

In general i'd recommend these as an alternative to shimano, race face or sram. I've never been a big fan on mixing drivetrain components and am a shimano fan. If Shimano make an XT level direct mount crankset i'll be on that but until then I have found the bottom bracket more reliable and better value than race face options and I've never been a big fan of gxp bb's. 


Product FSA Afterburner Modular 1x Crankset
Riding Type Cross Country, Enduro / All-Mountain, Trail
Arm Material Alloy
Arm Material Details Hollow forged AL7050
Arm Lengths 170mm, 175mm
Bolt Pattern Direct mount
Ring Options 28, 30, 32, 34, 36, and 38 tooth; forged CNC machined AL7075
BB Shell Widths English 68mm/73mm, PF30, PF30a, BB30, BB30a, BB92
Spindle Interface 30mm 392EVO aluminum spindle
Colors Bead blasted black with polished anodized black arms
CNC detailed, bead blasted anodized black chainring
Weight 1 lb 8.5 oz (695 g)
Miscellaneous Convertible spider design for different chainring and chainline configurations
Thick/Thin chainring tooth design for maximum chain engagement
Megatooth long tooth profile enhances chain retention
Optimized for new 11-12 speed systems
Chromoly chainring bolts
Standard and 157+ Spindle options
Price $162.99
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