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PUSH ACS3 Rock Shox Coil Conversion Kit (Excluding Spring) - Lyric/Yari 27.5 & 29 - 2016-2019

Code: PUASY76RS-LY27529
  • £295.00
In Stock at Warehouse | Shipped in 3-5 days
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The PUSH ACS3 marries the very best coil suspension engineering with ingenious air stop technology to give you a truly revelatory ride experience. This is the result of a singular and dedicated drive to manufacture a fork upgrade that is utterly unrivalled in trail potential. If you’re looking to convert your air-sprung fork to coil-sprung whilst retaining all the advantages of both, the ACS3 is a must-have.


PUSH is propelled by an exclusive commitment to performance. Each ACS3 is manufactured and assembled entirely in-house at PUSH’s Colorado headquarters. Complete control over the production line means that every single component part of the ACS3 is produced with meticulous care and devotion – each completed product is a masterwork of precision engineering.

Utilising specialised data logging and diagnostic computer systems, state-of-the-art CNC milling machinery and extensive rider testing, PUSH is able to achieve an unequalled level of refinement in every single ACS3.

As PUSH founder, Darren Murphy, emphasises: “We pride ourselves on start to finish, high-quality suspension products. Are there easier ways? Sure. Is easy the PUSH way? Absolutely not.” This obsessive commitment and care means that you’re investing in a suspension upgrade that performs unlike any other – limitless trail potential awaits.

Ingenious Design

The ACS3 has been designed explicitly to provide the benefits of a coil-sprung fork in terms of greater sensitivity to small bumps, maximal traction and reduction of trail chatter, whilst retaining the bottoming control normally associated with air-sprung suspension.

Utilising precision engineered, CNC wound coils – available in a wide range of spring rates and tuned to the tightest tolerances – PUSH is able to match each shock to your weight and riding style to give you the perfect trail experience. The linear feel and smooth handling afforded by ACS3 coils ensures trail heaven day in, day out.

A patent-pending Air Bump Stop cartridge used in conjunction with the coil spring enables you to fine-tune the progressiveness of your fork. With a standard fork pump, you can adjust bottoming control for specific riding conditions – all without interfering with the first 65% of travel. Whether you’re riding flowing single track or big hit trails, you can always be confident that the ACS3 will perform flawlessly.

From the laser-etched top cap to the Micro-XD coatings that line the lower plunger rod, every single detail of the ACS3 is the result of meticulous craft. The integrated unit is not only extremely durable but lightweight and fully trail-optimised.

Simple Installation

Installation of the ACS3 kit into your existing air fork is a straightforward process that only takes 20-30 minutes including a fork lower leg service.


  • Handcrafted in Colorado, USA
  • For conversion of air-sprung forks to coil-sprung
  • Bespoke tune for rider style and weight
  • Compatible with RockShox Pike, Lyrik, Yari and Fox 36
  • Precision engineered CNC PUSH coil spring
  • Unique Air Bump Stop technology
  • One-year limited warranty for all PUSH products


UK Deliveries
FREE when you spend over £50.00 in a single order
Otherwise it's typically £3.99 per order
Delivery should be expected between 2-3 working days unless stated on product page.

Worldwide Deliveries*
Approximately 4-10 working days depending on country
via Parcelforce Signed Delivery (fully traceable service). Please add items to the basket to calculate delivery for desired country.

If your country isn't listed for delivery at checkout please contact us.

Delivery of Bikes
We ship all our bikes free of charge within the United Kingdom (excl. Jersey and the Channel Islands at this time) and all our bikes come pre-assembled with just a few tweaks required (Please see our Bike Build Instruction page for details of assembly required).

All our bikes undergo a safety check before being re-boxed for shipping which can during busy periods take a little longer to complete so whilst we aim to ship all our bikes within two working days of the order please allow for additional time for this process.

Signature Required
All our consignments irrespective of the carrier require a signature upon delivery, deliveries are typically made between 08:00 and 18:00 so please bare this in mind when choosing a delivery address.

Package Recycling
We do try when possible to reuse packaging from our own suppliers in order to send purchased items to our customers, we ask if the packaging is still in good condition after you've received your goods then please try to use it again or recycle if not possible.