Best Mountain Bike Suspension Forks UK 2025

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Mountain bike suspension fork on trail bike

The suspension fork is arguably the most important component on a trail and enduro mountain bike. A quality fork transforms confidence and capability on technical terrain while a poor one wastes energy and undermines control. Here are the best mountain bike suspension forks available in the UK for 2025.

Top Picks

RockShox Pike Ultimate 140mm Suspension Fork

The RockShox Pike Ultimate is the benchmark trail fork for the vast majority of riders. The Charger 3 damper provides precise compression control and the Motion Control HSC/LSC adjustment lets you tune the fork to UK trail conditions ranging from smooth flow tracks to technical, rooty loam. The 140mm travel and 44mm offset combination suits most trail and light enduro bikes perfectly.

  • PIKE ULTIMATE CHARGER 3 RC2 CRWN 29″ BOOST 15X110 140MM SILVER ALM STR TPR 44OFFSET DBNAIR+ C1
£877.03

Fox 34 Factory GRIP2 140mm Suspension Fork

Fox is the other half of the trail fork duopoly and the 34 Factory with GRIP2 damper is their answer to the Pike Ultimate. The GRIP2 four-way adjustment is among the most sophisticated available and the plush small-bump sensitivity of a well-set-up Fox 34 is genuinely exceptional. The factory tune from new is excellent for UK trail conditions.

  • Fat fork: 20 inch fat bike fork air suspension fork, for 4.0 Fat tires,about 2880g.
  • Material: aluminum magnesium alloy double shoulder fork ,air pressure system shock absorption.
  • Specifications: standpipe 28.6x270mm(1-1/8″), travel tube 34x180mm, stroke 110mm, fork width 135mm, QR 9mm.
£105.34

Manitou Mezzer Pro 150mm Enduro Fork

Manitou makes excellent forks that are often overlooked in the Fox and RockShox duopoly. The Mezzer Pro is their enduro-focused offering with 150mm of travel and the impressive IFP damper. The Dorado-inspired architecture provides a progressive, supportive feel through the stroke that suits bigger UK enduro terrain particularly well. An outstanding alternative worth serious consideration.

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RockShox SID Ultimate 120mm Cross Country Fork

For cross country and marathon riders who prioritise low weight and efficiency, the RockShox SID Ultimate is the go-to option. The 120mm travel and Charger Race Day damper keep the fork locked-out efficiently on climbs and responsive on technical descents. The lightest performance fork in the RockShox range without sacrificing the quality UK riders demand.

  • The new SID Ultimate is lighter than ever built around a 35mm rigid chassis and equipped with the lightest performance s…
  • Fully redesigned Charger Race Day 2 3P shock absorber with three compression positions: open, pedal and solid lock.
  • DebonAir+ offers more sensitivity to small bumps and mid-ride support.
£954.99

Öhlins RXF 38 M.2 Enduro Fork

Öhlins brings their motorsport suspension expertise to mountain biking with the RXF 38. The TTX damper provides a level of tune-ability that is unmatched in the industry and the sustained stroke support makes this fork exceptional on the sustained descents that UK enduro venues provide. An investment for dedicated riders, but the performance justifies the premium.

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  • High-performance – with sequential read/write speeds up to 7,000/6,000MB/s
  • High-quality 3D NAND boasts reliability and endurance
£369.99

Buying Guide

Travel matching to your bike is important. Most trail bikes are designed around 130 to 160mm forks. Fitting a fork with significantly different travel changes geometry and handling in ways that may not suit your frame.

Axle standard must match your fork mount. Nearly all modern trail and enduro bikes use a 15mm thru-axle (Boost standard is 110mm width). Check your hub specification before purchasing.

Offset affects handling feel. 44mm offset forks suit most modern geometry trail bikes. Older frames designed around 51mm offset forks may handle poorly with modern shorter offset options.

Damper quality is the biggest differentiator between budget and premium forks. Low-speed compression adjustment allows you to fine-tune the fork for UK loam, clay and rock conditions.

Service intervals must be followed. Suspension forks need lower leg service every 50 hours and a full service every 100 to 200 hours. Factor in the cost of annual servicing when budgeting.

Final Thoughts

The RockShox Pike Ultimate and Fox 34 Factory are the clear leaders for trail riding and you will not go wrong with either. For enduro riding, the Manitou Mezzer Pro offers outstanding performance and deserves to be considered alongside the headline names.

Buying Guide

Mountain bike suspension forks absorb trail impacts, maintain tyre contact with the ground and allow the rider to maintain control and speed on rough UK terrain. The right fork for UK riding must handle roots, rocks, mud and the sustained compressions of high-speed moorland trails, with enough adjustability to tune the damping from the open, supple setting needed on rooty Welsh singletrack to the firmer setting required for hardpack trails like those at Grizedale or Cannock Chase.

FactorWhat to Look For
Travel LengthFork travel should match the intended riding style and frame geometry. Cross-country and marathon MTB riding suits 100 to 120mm travel; trail riding 130 to 150mm; enduro and aggressive trail riding 150 to 170mm; downhill 180 to 200mm. UK trail centres such as Dalby and Ae Forest are predominantly built for 130 to 150mm trail bikes; the more technical venues at BikePark Wales and Glentress Red suit 150 to 170mm enduro forks. Running more travel than the frame was designed for slackens the head angle and raises the bottom bracket, altering handling characteristics significantly.
Damper QualityThe damper controls the speed at which the fork compresses (compression damping) and returns (rebound damping). Better dampers — Fox FIT4, RockShox Charger 3, Manitou Dorado — provide low-speed and high-speed compression adjustment separately, allowing tuning for both small, high-frequency trail chatter and large, infrequent impacts like drop-offs. UK trail riding with its mix of constant root chatter and occasional rock impacts benefits significantly from forks with independent low-speed compression adjustment.
Air vs Coil SpringAir spring forks are lighter (typically 400 to 600g lighter than coil equivalents) and allow spring rate adjustment via a shock pump to match rider weight. Coil spring forks offer more consistent performance across the temperature range (important on cold UK mornings) and a more linear spring feel that many enduro and DH riders prefer. For trail use, air is appropriate for most UK riders; dedicated enduro and DH riders at BikePark Wales or Fort William increasingly choose coil forks for their improved performance in the cool, wet conditions typical of UK hillside venues.
Stanchion Diameter and MaterialStanchion diameter affects stiffness: 34mm stanchions are standard for trail (up to 140mm travel); 36mm provides greater stiffness for enduro (150 to 160mm); 38mm is the standard for aggressive enduro and DH use. Larger-diameter stanchions resist flex under braking and cornering loads, improving steering precision. Kashima-coated or DLC-coated stanchions reduce friction for improved small-bump sensitivity — a significant advantage on the constant low-level chatter of UK forest trails.
Wheel Axle StandardMost modern MTB forks use a 15x110mm Boost thru-axle standard, which is compatible with Boost-spaced front hubs (110mm OLD). Confirm your wheel uses a Boost or non-Boost hub and that the fork matches. Older 15x100mm non-Boost setups exist on some hardtails and require non-Boost forks. Thru-axle designs (QR15 or Maxle) vary by brand but all provide significantly better stiffness than the quick-release axle of older forks.

Frequently Asked Questions

How do I set up suspension fork sag correctly?
Sag is the amount the fork compresses under the rider’s static body weight in the attack position. Correct sag for most trail riding is 20 to 25% of total travel — so 30 to 38mm of sag on a 150mm fork. To measure: fully compress the fork, then slowly release it and allow the rider to stand on the pedals in a neutral position without bouncing. Note the position of the O-ring on the stanchion. Adjust air pressure (in 5 psi increments) until the sag measurement is correct. Lower air pressure increases sag; higher air pressure reduces it. Check sag with your full riding kit and hydration pack.
How often should I service a suspension fork?
Fox and RockShox both recommend a lower leg service (fresh lube oil and new foam rings) every 50 to 100 hours of riding. A full damper service (internal rebuild, new seals and damper oil) is recommended every 100 to 200 hours. UK trail riders typically accumulate 100 hours in a riding season; a lower leg service once per season and a full service every two seasons is a practical maintenance schedule. Signs that service is overdue include oil weeping from the seals, increased stiction, a clunking sound on extension, or noticeably reduced small-bump sensitivity compared to when the fork was new.
What is the difference between Fox and RockShox forks?
Fox and RockShox (owned by SRAM) are the two dominant suspension fork brands in the UK market, and both produce excellent products at every price point. Fox’s FIT damper system (including FIT4 and GRIP2) is widely praised for its feel and tunability; RockShox’s Charger 3 damper is competitive at trail and enduro level. Fork choice often comes down to personal preference for spring curve feel and availability: both brands maintain UK dealer and warranty networks. At equivalent price points, the Fox 36 Factory and RockShox Lyrik Ultimate are direct competitors; many UK riders choose based on their local shop’s warranty support rather than measurable technical differences.
Can I run a longer travel fork on my existing trail bike?
Increasing fork travel by more than 10 to 15mm is not recommended without checking with the frame manufacturer. Each additional 10mm of travel slackens the head angle by approximately 0.5 degrees and raises the bottom bracket by approximately 5mm. These geometry changes can improve stability and descending confidence but worsen climbing efficiency and steering agility. Some manufacturers specify a maximum recommended fork travel for their frame; exceeding this can void the frame warranty. If you want a more capable descending bike, a fork upgrade within the frame’s intended travel range is the safer approach.
What suspension fork is best for BikePark Wales?
BikePark Wales features steep, technical descents with exposed rock, roots and high-speed compressions that demand a stiff, well-damped enduro or DH fork. The RockShox Lyrik Ultimate (160mm, air), Fox 36 Factory (160mm) and Manitou Mezzer Pro are the most popular choices among visiting UK riders. For riders doing multiple full days at the bike park, a coil-sprung option such as the Fox 36 Step-Cast or Öhlins RXF 36 provides the consistent performance across a long day that air forks with temperature-sensitive pressure changes cannot always match in Welsh mountain weather.
How do I adjust rebound damping on a suspension fork?
Rebound damping controls how quickly the fork extends after compressing over an impact. The rebound adjuster is typically a red dial at the bottom of one stanchion leg. Turning it clockwise (in, towards slower) reduces rebound speed — the fork returns more slowly after an impact. Counter-clockwise (out, towards faster) increases rebound speed. Start with the adjuster at the midpoint of its range and test on a known trail section. If the front wheel feels like it is packing down (compressing repeatedly without fully extending) on successive bumps, increase rebound speed. If the wheel feels like it is bucking or deflecting off fast sections, slow the rebound.
What is the best budget suspension fork for UK trail riding?
The RockShox Recon Gold RL (around £350) offers genuine trail performance with Solo Air spring and Motion Control damping for 100 to 130mm travel applications, making it excellent value for hardtail trail riders at UK centres. The Fox Rhythm 34 (around £400) covers 130 to 150mm and is a strong budget option for trail and light enduro riding. The Manitou Machete Expert is another competitive option in the £350 to £450 range. Avoid budget forks from unknown brands — the quality of seals, stanchion coating and damper valving on cheap forks degrades rapidly in UK wet conditions and poor small-bump sensitivity significantly diminishes trail enjoyment.