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FOX Racing Shox 34 Float 27.5 Plus 140 3Pos-Adj FIT4 Boost Fork (51mm Rake)

FOX Racing Shox 34 Float 27.5 Plus 140 3Pos-Adj FIT4 Boost Fork (51mm Rake)

Item # FRS006X

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  • Matte Black, 1.5T, 15QRx110 ($879.00)
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Item # FRS006X


Smooth support for plus-sized trail rigs.

As of late, it's hard not to notice the surge in plus-sized trail bikes taking over local networks and premiere riding destinations. Suspension and component manufacturers haven't neglected this uptick in 27.5+ demand either, with the main players making a slew of new products to complement the massive traction and bump compliance of these bikes. Realizing that plus-sized bikes are legitimate fun and here to stay, FOX designed the 34 Float 27.5 Plus 140 3Pos-Adj FIT 4 Boost Fork (51mm Rake) for the larger clearance required by the stout wheels and wider tires of 27.5+ trail bikes. 34-millimeter stanchions strike a nice balance between stiff tracking across rough trails with lightweight efficiency desired for trails with lots of pedaling and climbing.

Overhauled from the previous model year, the 34 Float is revised for 2018 to increase its small-bump sensitivity, giving your already smooth 27.5+ trail bike a luxurious ride with plentiful traction as you blast over loose trail rubble, dissect rock-strewn descents, and climb up an over root impediments standing in your way. FOX achieves this greater sensitivity with a new damper tune sporting a reconfigured shim stack, as well as the addition of EVOL technology into the Float air spring. Both of these additions make it more supple and smooth, with less force required to initiate its travel as you ride across bumpy trail surfaces.

It's loaded with the Fit4 damper with 3-position adjust, which gives you the ability to switch between Open, Medium, and Firm setting with the quick flick of a lever. Not only is it incredibly convenient and fast to switch between all three settings, but it's even more adjustable within the Open Mode, where you'll find 22 clicks of low-speed compression tuning. And for situations calling for a practical lock-out, the Firm setting comes in handy for gaining rigid efficiency without bouncing up and down with every pedal stroke forward.

  • FOX's flagship fork for plus-sized trail bikes
  • Fit4 damper with 3-position Adjust: Open, Medium, Firm
  • Open mode has 22 clicks of low-speed compression tuning
  • Float air spring with EVOL for improved bump compliance
  • 34mm stanchions balance stiffness with lightweight feel
  • 51mm rake makes for nimble handling at slow speeds
  • 15 x 110mm BOOST thru-axle with quick-release

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 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
Brake Compatibility:
Recommended Use:
Manufacturer Warranty:
1 year limited

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Unanswered Question

Will this fork fit a 29" wheel as well, like to switch between my 27+ and 29er. Biggest 29er would prob be 2.4" wide. Thank you for the replys.