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  • FOX Racing Shox 36 Float 27.5 170 3Pos-Adj FIT4 Factory Boost Fork
  • FOX Racing Shox 36 Float 27.5 170 3Pos-Adj FIT4 Factory Boost Fork Top
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FOX Racing Shox36 Float 27.5 170 3Pos-Adj FIT4 Factory Boost Fork

Item # FRS009I

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  • Matte Black, 44mm Offset, 15x110 ($994.00)
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Item # FRS009I

Tame the trail.

Few mountain bike products receive the coveted gold standard status as a component that core riders intrinsically know will perform well. This goes beyond the reviews and other industry accolades and is instead proven on the trails day in and day out in real-world riding conditions and its success is spread by experience and word of mouth. We safely put FOX's 36 Float in this category as it offers remarkable reliability, a stiff chassis, and super plush travel. It's proven its worth in the Enduro World Series under the sports hardest charging and fastest riders and if your old fork has seen better days or you're looking for a fork on a new build, we strongly urge you to look at the 36 Float 27.5 170 3Pos-Adj FIT4 Boost Fork - Factory Series and enjoy a fork that'll help you get the most out of your trail riding and racing experience.

What differentiates this fork from previous Float 36's is its inclusion of EVOL technology into its air spring that's borrowed from its rear shocks. Essentially, it increases the volume of the negative air spring providing greater sensitivity to small bumps off the top of its stroke. By reducing the initial breakaway force need to start its travel, you end up with a more sensitive fork that is better able to absorb the trail and the air spring feels more coil-like. The fork ships with volume spacers installed plus extras to tune the air spring to your bike setup, weight, terrain, and riding style.

The impressively stiff 36-millimeter stanchions resist torsional flexion so your bike will track better through high-speed rock gardens, harsh g-outs, and popping into and out of berms. As part of the Factory Series, these stanchions employ FOX's Kashima coating for reduced friction and silky-smooth sensitivity to small bumps, as well as just looking really trick and boosting durability.

The newer Fit4 damper uses a slightly revised tune with a reconfigured shim stack helping to improve its sensitivity to trail chatter and small bumps. This design offers more control over the damping so you can set it up with more progression to prevent bottoming out while still utilizing its full travel. This Fit4 damper has 3-position adjustability giving you the option of running it in the Open, Medium, or Firm setting. In Open mode, you'll find 22 clicks of low-speed compression tuning, which helps prevent dive under heavy braking and allows the fork to ride higher in its travel preserving your bikes intended geometry. Medium gives you a bit more platform for more pedaling efficiency on smoother trails and long climbs where a firmer front end is welcome. Firm is practically a lock-out for when you're grinding up the fire roads to get to the goods or pavement stretches to and from the trailhead.

  • FOX's leading fork for all-mountain and enduro
  • Reconfigured for greater sensitivity to small bumps
  • Fit4 damper with 3-position adjust: Open, Medium, Firm
  • 22 clicks of low-speed compression tuning in Open mode
  • Float air spring with EVOL for small-bump compliance
  • 36mm stanchions for robust stiffness, precise tracking
  • Kashima-coated stanchions for smoother travel
  • 15 x 110mm BOOST thru-axle with quick release
Tech Specs
Tech Specs
Stanchion Material
Kashima-coated aluminum
Lower Material
Crown Material
7000-series aluminum
Wheel Size
Steer Tube Diameter
1-1/8 - 1.5in tapered
Stanchion Diameter
Axle To Crown
Spring Type
Float air with EVOL
Fit4 with 3-position adjust
[3-position adjust] Open, Medium, Firm, [Open mode] 22 clicks of low-speed compression, [rebound] adjustable knob
Firm with blow-off
15 x 110mm BOOST thru-axle with quick-release
Max Rotor Size
Brake Compatibility
post mount disc
Recommended Use
enduro, trail
Manufacturer Warranty
1 year limited

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