Krooztune
WP Air Fork Setup Kit- AER48
A complete Setup kit to tune the notriously harsh AER48 fork into a plush and forgiving fork. Aimed and tested for a superior in hand feeling, better big bump absorption and less chatter.
**Shown in photos assembled on rods for reference only**
Complete Kit Includes:
-Main Stack piston and valving setting/shims to match
-Complete ready to install Mid Valve Post assembly
-Specification sheet including all settings (Soft - Medium - Firm) all assemble to chosen setting at purchase.
- Optional settings to build the other variation / settings
-All clicker and oil levels included
Best fitted by competant suspension technician or mechanic with fork building and service knowledge.
Kits ordered will be built and assembled to selected setting at time of purchase. *Shims are now supplied to change to other settings on the spec sheet. Trails, MX B etc..
For best setting for AER fork we recomend tuning this kit matched to a WP genuine pressure spring 12n / #Red oem WP paint dot. This is Oem standard in some models (125 and some offroad bikes) but difficult to completely list all oem models.
12n Pressure spring available here (Single spring only required)
Detail:
This kit features a main stack compression piston matched with valving tested to best suit the 4 port piston. The beneifits here include more aggresive changes via the OEM external clicker, a softer more tunable stack that holds up to big fast hits whilst also retaining a plush feeling.
The Mid Valve post is a complete bolt on unit and is pre set ready to go. With adjustable float tested and balanced between a soft in hand feeling with enough dive under brakes to give you great tyre grip and turn in on slippery turns. Fast Pro riders may feel this setup is too soft however we have had some amazing feedback with this kit installed accross many bikes from trail rider at slow speeds right up to B level Mx pilots. The setting is easily adjusted accordingly to suit this variant in rider.
Each kit comes complete with a specification sheet that shows all the settings below. Optional shim kit to tune between these settings is available here if required -
Ordering kit, select best option and this will be shipped pre assembled:
- Soft / Offroad and light junior level mx
- Medium / C level mx riders / Veteran (35+) mx speed or fast hard offroad
- Firm / B level setting that suits a decent mx pace , tested plush enough to avoid arm pump and with enough hold up for a quick lap time.
Pro level riders , contact us for a custom setting to suit.
Tools:
Product information
PRODUCT FEATURES
Get Your Perfect Setup
Not sure which setting, kit level or upgrade is right for your bike?
We’ll match your suspension to your weight, speed and riding style using real data and years of race-proven experience.
Submit your details and we’ll guide you to the ideal setup.
F.A.Q.
They appreciate cut and details, things that aren't so obvious.
Do you offer setup advice with this product?
Absolutely.
Every purchase includes access to our Setup Form, where we provide personalised guidance on your ideal settings, spring rates, and upgrade choices.
Can I purchase items with another currency?
Yes, you may select a currency based on your personal preference. When you select your country in the country selector and set to your country’s version of the website, you will see prices listed in the regional currency.
Can I make changes to my order after it’s been placed?
Email Info@krooztune.com asap and quote your order number. Our emails are checked daily before shipping out any orders
What if I have issues or need support after buying?
We’re here to help.
You can reach us anytime for setup adjustments, technical questions or installation support. Krooztune products are backed by real riders and real workshop support.
Do I need to pay extra tariffs or taxes when ordering from the USA?
No — Krooztune covers all USA tariffs and import taxes.
The price you see at checkout is final, with no hidden fees or surprise charges upon delivery.
