Flow
Flow
Flow
Flow
Flow
Flow
Flow
Flow

Flow

MTB Air Fork Upgrade

£89.00
£120.00

    🔧  Support with setup

    🤙  Money back guarantee*

    🛒 Get 2+ (including HIT) for 15% off

Model

NOTE: We no longer offer two options for Fox 36/38 and Rockshox 35/38. These are a single model corresponding to the old "Short".

Customer Reviews

Based on 105 reviews
76%
(80)
15%
(16)
3%
(3)
3%
(3)
3%
(3)
S
S.C.
Fork: Fox performance 34 140mm
It really works ..

I was skeptical at 1st but man I love it ...very plush ride and just over all better ride like having a new fork

G
Glen Allen
Fork: Fox Performance Elite 36, Grip 2, 160 mm
Very happy!

I am a fairly small rider (60 kg) on a 160/150 bike and wasn't able to achieve full travel even with appropriate sag. After some additional suspension tweaks, it was better but still not full travel. That all changed with the Trutune Flow. Super easy to install and it required only a minor pressure change - fantastic results. Would highly recommend for a lighter rider looking for full performance from the fork.

W
William Bandy
Fork: 2020 Fox 32 step cast.
Fox 32

Unbelievable improvement. Before these forks were worthless.
Suddenly there become plush and compliant.

G
Glenn
Fork: Lyrik Select,+ 160
Does the job

Took a few rides to dial in the rebound and air pressure. I now have 5psi more in the fork but get an extra 20mm approx more travel. The sag ring now reaches the Debonair logo which never happened previously even without any tokens fitted. Fork is just as supportive prior to adding the insert. Small bump sensitivity is also improved

L
Luke Brayley
Fork: Fox 38 grip x2 factory / fox 40 factory
Great product

I think the true tune is fantastic I feel it transformed my forks , I originally ran my forks with true tune , no volume spacers and 110 psi fork was good , I tried 1 volume spacer and true tune fork was amazing 110 psi , can’t believe how good it is

compliance without compromise

Reduce fatigue, increase grip and comfort. Experience a coil-like feel without the weight penalty.

The TruTune Flow is a plug-and-play upgrade for mountain bike air forks. Powered by activated carbon, it increases effective air volume and reduces the speed sensitivity of air.

The result? Better small bump compliance, increased mid-stroke support and end stroke absorption.


Rockshox-08.jpg__PID:5f95fa96-9240-4a8e-8718-59d6f61acbff

Plug-and-play

Installs simply, just like a volume spacer. Release all pressure, remove the top cap, clip on or thread on the insert, and charge to our recommended pressure.

plush

Smooth and comfortable feeling through the whole travel, reducing arm pump and fatigue and providing improved grip.

Provides a consistent stiffness, similar to a coil spring. This allows running higher pressure for exceptional support without running into harshness, or keeping pressure the same to unlock more travel.

Force_curve_vs_tokens.jpg__PID:bba5dda5-358a-45df-b319-454d20305e4c
speed_sensitivity.jpg__PID:9ed4625b-aabc-4f0e-baa5-82b5b56159fd

predictable

Reduces speed sensitivity inherent in air springs, meaning the fork feels more predictable and does not stiffen up with faster movements. This is critical to reducing chatter and improving end stroke absorption.

compatibility

Compat-RS.png__PID:8913baa7-4c7d-48ab-baff-d3959016aa4f
Compat-FOX.png__PID:dd8913ba-a74c-4de8-abfa-ffd3959016aa

setup

Tuning-1-Flow.png__PID:a74c7de8-abfa-4fd3-9590-16aa4f1c3ae6
Tuning-2-Flow.png__PID:3cc5c06b-425a-4306-9a0e-b594879ae67b
Tuning-3-Flow.png__PID:293cc5c0-6b42-4a73-86da-0eb594879ae6
Flow-hit.png__PID:8531dc8f-ef23-4366-9785-1cf23ecabdca

build the ultimate combo

Get 15% off by combining with our HIT piston upgrade for a complete coil-like transformation through the entire travel, with the adjustability and weight advantage of air.

Pre-order HIT now

warning

TruTune inserts come in specified equivalent number of tokens. Do not exceed the manufacturer specified maximum number of tokens / spacers for your fork model. If in doubt, contact us at info@trutune.co.uk.

Modifying any aspect of your suspension without the appropriate training and experience can result in serious injury or even death. Installation should be carried out by a competent technician. We cannot be held responsible for the results of incorrect installation of our product and assembly of your suspension.

Rock Shox, Fox, Rhythm, FLOAT, DebonAir, Dual Position, Pike, Lyrik, Yari, Reba, Bluto, Revolution, SID are registered trademarks and propery of their respective owners. All company and product names used in this website are for identification and compatibility purposes only. Use of these names, trademarks and brands does not imply endorsement.

in the media...

pinkbike magazine

"trutune suspension inserts unlock more travel"

"When I first heard about it, I thought it was a joke, but after talking to the engineers at Carbon Air, the company behind TruTune, I realised the physics was sound. Now I've had the chance to ride it and, at the risk of giving away the ending of this review too soon, it does what it promises."

singletrack magazine

"the tardis token"

"With the TruTune installed I can finally get modern big negative air chambered fat-legged forks to perform better. It doesn’t give you everything that a coil fork does but it certainly improves things massively. If your bike has a 38mm fork on it that you can’t quite get to do the things you need it to do, a TruTune MTB AIr Fork Insert is totally worth a look."

PINKBIKE POLE VOIMA

TruTune form part of the setup on the Pole Voima reviewed on Pinkbike magazine.

"I called in a Carbon Air insert to make the Zeb more linear and upped the pressure to 72 psi. This allowed me to use more of the travel on big hits while sitting a little higher in the travel, which better matched the feel from the rear."

Read Article

PINKBIKE INNOVATION OF THE YEAR 2021 NOMINATION

Our technology was nominated for Pinkbike's innovation of the year 2021, after our prototypes were tested by Seb Stott.

"This one's a lot harder to explain. I thought it was a joke when I first heard about it. But Carbon Air has been used in the air suspension of Audi's luxury sedans for years.In short, its aim is to make air suspension work more like a coil. It does this by using activated carbon, which can be made from sawdust and has the counter-intuitive property of mopping up more molecules of air per cubic centimetre than the same volume of empty space. It acts as the opposite of a volume spacer - effectively increasing the volume of an air chamber."

Read Article

WARNING

Use of TruTune components may invalidate any warranty with the original equipment manufacturer.

Rock Shox, Fox, Rhythm, FLOAT, DebonAir, Dual Position, Pike, Lyrik, Yari, Reba, Bluto, Revolution, SID are registered trademarks and propery of their respective owners. All company and product names used in this website are for identification and compatibility purposes only. Use of these names, trademarks and brands does not imply endorsement.