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  • FOX Racing Shox 34 Float SC 29 120 3-Pos-Adj FIT4 Factory Boost Fork
  • FOX Racing Shox 34 Float SC 29 120 3-Pos-Adj FIT4 Factory Boost Fork
  • FOX Racing Shox 34 Float SC 29 120 3-Pos-Adj FIT4 Factory Boost Fork Top
  • FOX Racing Shox 34 Float SC 29 120 3-Pos-Adj FIT4 Factory Boost Fork Top
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FOX Racing Shox34 Float SC 29 120 3-Pos-Adj FIT4 Factory Boost Fork

Item # FRS008Q

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  • Matte Black, 51mm Offset, Kabolt, 110mm ($943.00)
  • Shiny Orange, 51mm Offset, Kabolt, 110mm ($943.00)
  • Matte Black, 44mm Offset, Kabolt, 110mm ($943.00)
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Item # FRS008Q

Leaner and meaner.

If you've been following the world cross-country racing, you're probably well acquainted with FOX's 32 Step-Cast Fork that was introduced a couple of seasons back to shave every last gram for racers seeking an advantage in terms of all-out weight savings, albeit with some sacrifices in stiffness and support, seeing it's only packing 100 millimeters of travel and features narrower 32-millimeter stanchions. Well, FOX is at it again, proving they're never really content with the status quo in creating one of the lightest 120-millimeter forks available in the 34 Float SC 29 120 3-Pos-Adj FIT4 Boost Fork.

The secret to its incredibly lightweight disposition lies in the stepped lowers of the 34 Step-Cast, which are hollowed out to reduce weight, complete with shortened shaft lengths and the same 8-millimeter damper shaft as used in the 32 Step-Cast Fork. In terms of actual weight savings, you'll find it's approximately 4.8 ounces lighter than a comparable 32 Float with 120 millimeters of travel and a whopping 8 ounces lighter than a 34 Float with 140 millimeters of travel. Both of these figures might not seem like a big deal, but they're pretty significant seeing the lengths some racers go for weight savings, especially in a world where carbon components will cost you a pretty penny and likely not reduce as much weight as running this 34 Step-Cast Fork.

Instead of being solely intended for cross-country domination, the 34 Step-Cast sets its sights on everything from epic trail rides to marathon events and adventure races where you'll find a mixture of trail conditions ranging from smooth-buffed dirt to bumpy root and rock sections. Seeing it's packing 34-millimeter stanchions, it's inherently stiffer than the more spindly 32 Step-Cast. In fact, FOX claims it's a whopping 15 percent stiffer than a 120-millimeter Float 32 Fork and it's on par with a 34 Float with 140 millimeters of travel, in terms of stiffness and support on bigger hits and technical terrain. Ultimately, this means you'll be able to use a trail-worthy fork on your cross-country race bike or shorter travel 29er without compromising efficiency or sacrificing the support and plushness you've become accustomed to with a 34 Float.

Delving into the air spring and damper available with the 34 Step-Cast, you'll find it's similar to what you've likely been riding on FOX for the past couple of seasons, which is a good thing if you enjoy bump-smoothing compliance and traction, as well as three on-the-fly adjustable settings and separate low-speed compression tuning. The Float air spring has EVOL, which is FOX's term for increasing the negative air spring volume for a more supple feel that's more responsive to soaking up bumps, rocks, and roots along the way. FOX then uses their Fit4 damper with 3-position adjust, which is carried over from 34 Float to give you Open, Medium, and Firm settings with the simple flick of a knob, plus the ability to dial the low-speed compression to your exact liking in the Open mode.

  • Feathery-light efficiency without sacrificing trail chops
  • Designed for marathon events, adventure races, and trail rides
  • 34 Step-Cast with 120mm travel and Kabolt 110 (bolt-on) axle
  • Stepped, hollowed-out lowers significantly reduce its weight
  • Stiffness is similar to that of a 140mm 34 Float Fork
  • Float air spring with EVOL for small-bump compliance
  • Fit4 damper with Open, Medium, Firm settings
  • 29in 34 Step-Cast clears 2.6-inch tires
Tech SpecsWeight
Tech Specs
Stanchion Material
Kashima-coated aluminum
Lower Material
Crown Material
7000-series aluminum
Wheel Size
Steer Tube Diameter
1-1/8 - 1-1/2in tapered
Stanchion Diameter
Spring Type
Float EVOL
Fit4 with 3-position adjust
3-position adjust: Open, Medium, Firm, Open Mode adjust: low-speed compression tuning, external rebound adjust
Firm mode
15 x 110 mm Boost Kabolt (bolt-on) axle
Recommended Use
cross-country, trail
Manufacturer Warranty
1 year limited

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Matte Black, 51mm Offset, Kabolt, 110mm
Shiny Orange, 51mm Offset, Kabolt, 110mm
Matte Black, 44mm Offset, Kabolt, 110mm

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[34 Step Cast 29 with 120mm travel, Kabolt 110] 1623g

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Upgraded from a 32 fork

    Awesome upgrade. Lighter and stiffer. Sadly the decal is not available in different colors yet.