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Vorsprung Smashpot - Fork Coil Conversion System

Vorsprung Smashpot - Fork Coil Conversion System


Regular price £354.00
Regular price Sale price £354.00
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Presenting the Smashpot - a fork coil spring conversion system for single crown enduro forks, featuring externally adjustable hydraulic anti-bottoming technology to deliver precisely the amount of bottoming resistance you need. The benefits of coil are clear: if your first priority for your fork is outright performance and grip, get yourself a Smashpot.


• Catering to rider weights from 45kg (100lbs) to 125kg (275lbs) with 12 coil spring rates

• Allows lighter riders to get the most use out of their forks, and heavier riders the support they need without excessive air pressures

• Only coil conversion system on the market allowing 180mm travel

• Easily adjust your travel with internal spacers (please note the minimum & maximum travel of your fork as determined by the manufacturer)

• Unique Hydraulic Bottom-out System reduces harshness

• Can be transferred between different forks with minimal parts /cost (purchase of a new top cap or foot stud)

• Reliable and low maintenance, set and forget. User-installable and serviceable

•Weight increase of approximately 250-450g (dependent on spring rate and fork's existing spring system)
 Model Year Compatibility
26" Wheel Fox Forks Any
Fox 32 Any
Fox 34 Any
Fox 36 2015-2020
Fox 36 E-Bike 2018-2020 ✔ - Only Spring Rates up to 65lbs/in
Fox 36 Rhythm 2018-2020
Fox 36 2021
Fox 38 2021
Marzocchi Z1 2019+
Marzocchi Z2 2019+
Rockshox Lyrik (35mm) 2016+
Rockshox Yari (35mm) 2016+
Rockshox Pike 26" 2014+
Rockshox Pike Non-Boost 27.5/29 2014+ ✔ - Do not exceed max travel
Rockshox Pike Boost 27.5/29 2014+ ✔ - Do not exceed max travel
Rockshox Revelation (35mm) 2018+ ✔ - Do not exceed max travel
Rockshox Zeb 2021+ ✔- Max 180mm travel
Rockshox Domain 2022+ ✔- Max 180mm travel 
Ohlins RFX36 M2 (Ohlins don't do model year releases)
Ohlins RXF38 M2 (Ohlins don't do model year releases)
WARNING: VORSPRUNG products should be installed and serviced by a trained bicycle service technician, in accordance with both VORSPRUNG and original manufacturers' specifications. If you have any doubt whether or not you can properly service your suspension product, or you have not performed this kind of work before, then please DO NOT attempt it. Improperly serviced products can fail, causing the rider to lose control resulting in SERIOUS INJURY OR DEATH. That's not a joke. Don't mess around with it if you don't know what you're doing, because the best case scenario is usually that you damage something in the process. Do not perform any kind of service on your suspension whilst drunk, high or stupid. We accept no responsibility nor liability for component damage or failure of any description in the case of self-installed units.

INSTALLATION MANUAL - Rockshox/Fox/Marzocchi


 How much weight does it add?
It's heavier than your air spring by between 250-450g, depending on spring rate (firmer springs are generally heavier) and the fork's original spring system (TALAS/DPA are typically heavier than Float/Solo Air). If the weight bothers you, you may be more interested in a Luftkappe.
Can I convert my fork back to air afterwards? Going back to air, should you wish to, may not be an option - spring rub may score the inside of your stanchion, so the air piston may not seal again. The spring is both isolated and guided to minimise stanchion knock and rub, however, there are no guarantees an air spring will seal again after riding with a spring installed. We'd be pretty surprised if anyone actually wanted to do this after riding the Smashpot though.
Does it void the fork's warranty? As with any aftermarket modifications, it should be expected to void the fork manufacturer's warranty.
Do I need any extra parts to change the travel? All spacers required are included with the kit. The only thing you may want is more heat shrink for the cartridge tube, as it's installed after travel is set internally
Typical fork maximum permissible travels: Rockshox:
Lyrik/Yari 27.5"/29" - 180mm
Pike/Revelation 27.5/29" - 160mm

36 Float/Talas 27.5" - 180mm OR 160mm - call Fox with your serial number to check max travel prior to setting Smashpot to more than 160mm travel.

36 Float/Talas 29" - 170mm OR 160mm - call Fox with your serial number to check max travel prior to setting Smashpot to more than 160mm travel.

Z1 2019+ 27.5" - 180mm
Z1 2019+ 29" - 170mm
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Why J-Tech?

Comprehensive Servicing and Tuning
J-TECH offers servicing and tuning for a diverse range of suspension products, ensuring a broad spectrum of customer needs can be met.

Highest Standards
The standard of servicing and tuning provided by J-TECH is unparalleled, representing the best in the industry.

Data-Driven Approach
Leveraging years of experience and data from extensive data logging and dyno testing, J-TECH provides a calculated service, eliminating guesswork, myths, and hype for a job done with the utmost precision.

Athlete Support
J-TECH backs up its expertise by supporting athletes at all levels, including a world cup DH team, DH world cup riders, and EWS riders, demonstrating their commitment to excellence.

In-House Brand
With their own brand of suspension upgrades, tooling, and spare parts at, J-TECH consolidates their experience and knowledge to offer high-quality products, aiming to optimize your suspension for peak performance.

Continuous Innovation
J-TECH is at the forefront of new technologies, constantly pushing the boundaries to provide customers with the best possible service, ensuring they stay ahead in the dynamic field of suspension technology.