Fox 38A lot helps a lot!

Adrian Kaether

 · 06.04.2020

Fox 38: A lot helps a lot!Photo: Fox
Fox 38: A lot helps a lot!
The Fox 36 enduro fork has never looked small. Now Fox is giving the 36 its big brother, the 38. Stiffer but also heavier, with up to 180 millimetres of travel, also for 29-inch models.

Oh you fat egg! Admittedly: The launch of the new Fox 38 is not a huge surprise for us. After all, rumours about it had been circulating for some time. But now that the fork is finally in front of us, we have to recognise it: It's quite a stunner! And even its "little brother", the Fox 36 enduro fork, never looked very slender.

  Especially for heavy and aggressive riders like Rude, the higher torsional rigidity should be a plus.Photo: Fox Especially for heavy and aggressive riders like Rude, the higher torsional rigidity should be a plus.

Fox 38: For freeriders and enduro racers


Why a Fox 38 now, some may ask: The Fox 38 bridges the gap between the Fox 36 enduro fork and the Fox 40 downhill fork. It is around 200 grams heavier than the Fox 36 with the same suspension travel, but is also over 30 per cent stiffer, especially in terms of torsional stiffness, where it even increases by 38 per cent (manufacturer's specifications). Heavy enduro racers and freeriders in particular should be served up even more steering precision and performance with slightly more weight, so that nothing burns even at high speed on EWS stages or in the bike park. Incidentally, the Fox 38 is available in 27.5-inch and 29-inch versions with up to 180 millimetres of travel.

  Plenty of support, many tuning options, optimum function even at high speeds. Heavy and fast enduro racers will probably not mind the slight extra weight of the 38.Photo: Fox Plenty of support, many tuning options, optimum function even at high speeds. Heavy and fast enduro racers will probably not mind the slight extra weight of the 38.

Technology and inner workings: New casting, new damper


In terms of technology and internals, the Fox 38 shares many features with the Fox 36, which has also been relaunched for 2021. New Evol cartridge with higher air volume in the negative chamber for more sensitivity, newly designed casting for higher stiffness at low weight with a wide cantilevered fork crown for plenty of head tube clearance with low fork offset. Brake disc clearance up to 230 millimetres, which will please e-bikers in particular. In addition, new air and oil ducts in the fork, which should also improve the response behaviour.

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  Instead of a normal thru axle, a so-called floating axle is used in the new forks. This is intended to prevent the casting from becoming tense and the fork from responding less responsively as a result.Photo: Fox Instead of a normal thru axle, a so-called floating axle is used in the new forks. This is intended to prevent the casting from becoming tense and the fork from responding less responsively as a result.


However, the most striking feature of the new casting is probably the bulges at the rear of the fork tubes: These channels are designed to prevent the air from building up too much at the bottom of the casting when the fork is fully compressed, preventing the full spring travel from being utilised. A positive side effect is that the movement in the fork should also cause the oil to be pumped upwards more regularly in the channels and thus improve the lubrication of the upper seals. Fox has also fitted quick release valves to the channels of the higher-end forks, which are designed to easily equalise atmospheric pressure differences and quickly remove back pressure. Previously reserved for the Fox 38 is the partially elliptically shaped head tube, which is also intended to provide more stiffness at a lower weight.

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  The channels on the immersion tubes are designed to ensure optimum oil and air flow even when the fork is deeply immersed.Photo: Fox The channels on the immersion tubes are designed to ensure optimum oil and air flow even when the fork is deeply immersed.

Fox 38: Versions, prices, weight


As usual with Fox, the Fox 38 will be available as a Performance version with Grip damper and as a Performance Elite and Factory version with Fit4 damper or Grip2 damper with adjustable high and low-speed rebound and compression damping. The Grip2 shock will also get an update for 2021: By using a technology Fox calls VVC (Variable Valve Control), the adjustment range of the damper is to be increased even further and also deliver even better performance in other respects.


The fork comes with 37, 44 or 51 millimetre offset and will cost between 1259 and 1589 euros. E-bike specific versions will also be available. Weights start at 2180 grams. You can also find all the information on the Fox website.

  Pistachio is the colour of the anniversary edition of the Fox 38, a limited edition model that harks back to the heyday of freeriding.Photo: Fox Pistachio is the colour of the anniversary edition of the Fox 38, a limited edition model that harks back to the heyday of freeriding.  The Fox 38 Performance is the entry-level model in the 38 range. Comes with a simpler grip damper and without quick bleed valves.Photo: Fox The Fox 38 Performance is the entry-level model in the 38 range. Comes with a simpler grip damper and without quick bleed valves.

Update for the Fox 40: technology, prices, weights


The Fox 40 double-bridge downhill fork has been given the same treatment as its smaller brothers. A newly designed, stiffer chassis, air ducts on the dip tubes with quick exhaust valves, a new fork crown for more head tube clearance, new oil and air ducts inside and a new Evol cartridge for finer response behaviour. Available with the more favourable Grip damper or as a Factory with the new Grip2 damper with variable valve control (VVC) for a wider adjustment range. As the high-speed rebound and compression dampers only have eight clicks, as in the smaller forks, specialists like Greg Minnaar will probably have to continue to live with half clicks. However, all normal users should be satisfied with the eight-click adjustment.


Only available with 203 millimetres of travel and 48, 52 or 56 millimetres offset in 27.5 or 29 inch. The Fox 49 as a 29 inch version of the Fox 40 has been cancelled. From 2299 euros and 2816 grams. You can also find all the information on the Fox website.

  Aaron Gwin on the new Fox 40 in the white anniversary edition.Photo: Fox Aaron Gwin on the new Fox 40 in the white anniversary edition.  The Fox 40 also features the new channels with quick exhaust valve at the rear of the casting.Photo: Fox The Fox 40 also features the new channels with quick exhaust valve at the rear of the casting.  The Fox 40 is not equipped with a quick release. It is lighter and stiffer, but a little less practical.Photo: Fox The Fox 40 is not equipped with a quick release. It is lighter and stiffer, but a little less practical.
  The Fox 40 has mainly undergone improvements to details, but these should be quite noticeable overall.Photo: Fox The Fox 40 has mainly undergone improvements to details, but these should be quite noticeable overall.

Adrian Kaether's favourite thing to do is ride mountain bikes on bumpy enduro trails. The tech expert and bike tester knows all about Newton metres and watt hours, high and low-speed damping. As test manager at MYBIKE, Adrian also likes to think outside the box and tests cargo bikes and step-through bikes as well as the latest (e-)MTBs.

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