Fox 38 mountain bike fork: how this suspension works

The Fox 38 suspension fork is built for aggressive trail and enduro riding. Here is how its chassis, damper, and air spring work together for control and comfort.

The Fox 38 mountain bike fork is one of the best-known long-travel suspension options for aggressive trail, enduro, and e-MTB riding, and it is widely specced on high-end bikes in the US market such as the Cube Stereo Hybrid line that uses Fox front suspension components according to product listings on Idealo, 05/15/2026Idealo, 05/15/2026Fox Factory, 04/10/2025.

Updated: 05/17/2026 | Reading time: approx. 12 minutes

By the AD HOC NEWS editorial team - specialized in product-led market coverage.

At a Glance

• Product: Fox 38 mountain bike fork
• Category: Long-travel suspension fork for MTB and e-MTB
• Brand/Manufacturer: Fox Factory
• Main Use Cases: Enduro, aggressive trail, and e-MTB riding
• Availability: Sold on complete bikes and as aftermarket fork in the US
• Key Markets: United States, Europe-focused performance MTB segment

What the Fox 38 mountain bike fork is and how it works

The Fox 38 is a single-crown suspension fork with large 38 mm stanchions designed for long-travel trail, enduro, and e-MTB use, and it appears as Fox 38 Rhythm or related trims on e-bikes such as the Cube Stereo Hybrid ONE77 according to product descriptions on Idealo, 05/15/2026Idealo, 05/15/2026Fox Factory, 03/20/2025.

Inside the Fox 38 chassis is a combination of an air spring in one leg and an oil damper in the other, where the air spring supports rider weight while the damper controls compression and rebound to keep the front wheel tracking the ground, as Fox explains in its technical overview of the 38 familyFox Factory, 03/20/2025Fox Factory, 02/10/2025.

On select trims, the Fox 38 uses Fox air spring systems such as EVOL and damper technologies such as GRIP, designed to provide tunable support and small-bump sensitivity while staying composed under heavy braking, according to Fox suspension documentation and product communications in the past two model yearsFox Factory, 05/18/2024Fox Factory, 09/22/2024.

Why the Fox 38 mountain bike fork matters for consumers and industry

For US riders who push their trail or enduro bikes hard, the Fox 38 provides a level of stiffness and adjustability that many brands target for bikes in the aggressive all-mountain, enduro, and e-MTB segments, and this fork family is frequently discussed in comparative reviews by US media outlets covering suspension performancePinkbike, 08/15/2024Vital MTB, 07/30/2024.

From the industry side, Fox positions its long-travel forks including the 38 as part of a broader portfolio of performance suspension components that are supplied to bike brands worldwide, including US-focused manufacturers, which in turn rely on these forks to differentiate high-end builds in categories like e-MTB and enduroFox Factory, 03/28/2025Fox Factory, 04/10/2025.

Because suspension performance has a major impact on comfort and control, bike makers in the US often spec forks like the Fox 38 on models intended for steep, technical terrain and for riders who may weigh more or carry gear, making the rigidity of the 38 chassis a relevant factor for long-term durability and steering precisionOutdoorGearLab, 04/05/2025Singletracks, 06/14/2024.

Fox 38 mountain bike fork in the US and global market

In North America, Fox Factory reports that bicycle components including forks such as the Fox 38 remain an important part of its revenue mix, with the majority of sales in the Americas region, according to its recent annual filing which covers the latest full fiscal year and highlights OEM and aftermarket demand for performance suspensionFox Factory, 03/28/2025SEC, 03/28/2025.

On the global bike market, enduro and e-MTB segments where long-travel forks such as the Fox 38 are specified have expanded over the past several seasons, and industry analysis notes that riders in Europe and North America have shown strong interest in longer travel and more capable trail bikes, which in turn supports demand for forks in this classStatista, 01/25/2025Bicycle Retailer, 11/05/2024.

Looking at specific bike builds sold in Europe with relevance to US riders who may order similar configurations, the Fox 38 Rhythm appears on models like the Cube Stereo Hybrid ONE77, and these bikes combine the fork with high-capacity Bosch drive systems, indicating that frame makers trust the 38 fork platform for the higher weights and speeds associated with e-MTBsIdealo, 05/15/2026Idealo, 11/02/2025.

• Single-crown long-travel fork with 38 mm stanchions aimed at enduro and e-MTB use.
• Air spring and oil damper combination for tunable support and control over rough terrain.
• Available on many complete bikes and as an aftermarket fork in the US.
• Used by bike makers for aggressive trail and e-MTB builds.

Fox Factory is the company behind the Fox 38 mountain bike fork and a range of other suspension components used on bicycles, powersports vehicles, and trucks around the world, including models sold widely in US bike shops and through online retailersFox Factory, 04/10/2025Fox Factory, 03/28/2025.

Fox Factory Holding Corp. is listed on Nasdaq under the ticker FOXF, and its registered shares reference ISIN US35138V1026 according to its investor relations materials and US regulatory filingsFox Factory, 03/28/2025SEC, 03/28/2025.

Disclaimer: This article does not constitute investment advice. Stocks are volatile financial instruments.