Mountain race shop mb1

15/10/2026

I think most riders question if suspension modifications and upgrades are worth the cost and lets be honest, I can waffle on about suspension indefinitely so let me throw some numbers at you quickly and you can log that against the type of riding you do because it’s all relative.

4.5 seconds per lap.

In 2021 I did an exercise to quantify the cost of suspension upgrades.

YZF250 same c grade rider, same track, same bike.

Quick 10 min warm up, 5 laps stock, 5 laps with springs and shims, 4.5 seconds a lap quicker, 22 seconds quicker over 5 laps on a track that was in ride day condition after 5 1/2 hours of use by everyone.

Now this translates to around 1/4 of a track length, most tracks run around 2 min so you can apply that to your track or even your bush riding.

You tell me, is $1350 work worth 22 seconds each race, is it worth being able to ride more comfy with more control?

Let me know in the comments.

Motorcycle / Mountain bike Suspension Specialist

14/10/2026

https://www.instagram.com/reel/DePQpIwN-ey/?psln=MWs0OTEzd2NkaWtneg==o

14/10/2026

Home time, all serviced and ready to hit the track

13/10/2026

STOP GUESSING WHAT TO CHANGE IN YOUR SHIM STACK.

What happens when you add a shim, change its thickness or alter mid-valve float? How do those changes affect oil flow, pressure and damping force?

My new book, Shim Stack Engineering, walks through the calculations behind those decisions—from the first principles through to fork and shock design and dyno checks.

Open the images for a look inside. Each one shows a real page from the book.

Inside you’ll find:

• Shim diameter, thickness, count and bending.
• Bleed and or***ce damping.
• Spring and trampoline mid-valves, float and base-valve balance.
• Gas pressure, ICS springs, cavitation and oil viscosity.
• Wheel rate, linkage ratios and rider requirements.
• Worked fork and shock examples, plus methods for checking predictions on a dyno.

Advanced engineering explained step by step, with defined symbols, 226 numbered equations, worked examples and Harvard references.

For suspension tuners, race mechanics and riders who want to understand why a change works—and learn how to calculate their next one.

DIGITAL PDF — AUD $99
https://payhip.com/b/rWwpq

PRINTED BOOK
https://dmtnyu-3p.myshopify.com/products/shim-stack-engineering

Craig Dixon
Mountain Race Shop™
Diagnose. Engineer. Tune. Teach.

13/10/2026

Ready to proof read. Shim stack engineering

Pop me an email if you want to go on the release list.

[email protected]

11/10/2026

Anytime there is a problem then the solutions abound and the WP suspension on the Ktm husky and gas gas has plenty of problems which leads to “how fast do you want to go” Limited stock of fork tubes also Kashima shock bodies

Book her in get her sorted. 0420947505

10/10/2026

Truth is no bikes are setup for you, your weight, your riding, your speed.

Some are better than others, some are just way out of balance, some understeer, some oversteer.

There is a raft of items and all new bikes have some, so book it in and get it done.

10/10/2026

This thick heavy grease just attracts dirt and grit, wd40 is a better choice, get fit of the water That sits behind the dust seal as well.

09/10/2026

Shocks don’t need a service untill they leak right….. yeh nah

09/10/2026

Summers here