Flow
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Flow

Flow

MTB Air Fork Upgrade

£89.00

    🔧  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 128 reviews
77%
(99)
15%
(19)
3%
(4)
2%
(3)
2%
(3)
R
Rebecca Johnston
Fork: RockShox Lyric Select+,150mm travel

Tru Tune Flow has made my Rock Shox fork much more plush & I now use most of the travel

D
Don Curtin
Fork: Fox 38 170
Testing on going

Installation straight forward and did notice that had to inflate forks about 10psi more to get same sag.was hoping to do back to back.tests at FOD but weather had other ideas.Tried at BPW but left it in all day because again weather dire.
I did notice the fork felt more damped but also a little dead so had to decrease rebound.I think I can improve it’s performance but my local trail are not rough enough to really test it so that’s why I have only given it 3 stars.
I purchased the shorter model as was advised it was only one for Fox 38 although other suspension outlets are selling both as suitable with the longer one more suited to less aggressive riders which is me.
There is a change in fork feel but only time will tell if it’s worth the out lay.

S
Stefan Promitzer
Fork: Fox 38 170mm
Perfect

Ride more preasure one click more low and high speed compression the feeling is softer and i can go faster

I
Ian Robinson
Fork: Fox factory 38 160mm
Magical device

I bought this after listening to the downtime podcast, I was interested in taking out the trail chatter which it does, but the most impressive part is how it handles bigger drops!

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M
Marcio Franco
Fork: Fox 36 Performance 150mm
Good improvement

gain in travel , more progressive and smooth

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.


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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.

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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

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setup

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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.