Fork & Spring Calculation (Spring Rate) – perfect balance for your sportbike

The right shock absorber and the appropriate fork spring are the foundation for a perfectly functioning Suspension.
No matter how high-quality a Suspension is – with the wrong spring rate, it will never perform optimally.

A correctly calculated spring ensures:

• exact chassis balance

• optimal negative spring travel (Sag)

• better turn-in

• more grip at the rear wheel

• more stable braking behavior

• clean feedback from the front wheel

At TGP MotoRacing, we calculate your ideal spring rate for:

• Fork

• Shock absorber

• Racing cartridges

• Öhlins / K-Tech / WP components

• special applications (Street, Track, Racing)

Our spring rate calculation is one of the most important foundations for a really good setup
– and is the point that 80% of workshops simply overlook.

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⭐ Fork & Spring Rate Service Overview

1. Individual Spring Rate Calculation

We calculate the ideal spring rate based on:

• Rider weight (with gear)

• Riding style

• Purpose: Street / Trackday / Racing

• Bike type (600cc vs. 1000cc)

• Tires (Pirelli / Dunlop / Bridgestone have a big influence!)

• Chassis geometry

• Chassis age & condition

➡ Result: The exact right spring front and rear.

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2. Fork Springs – Replacement & Adjustment

We install high-quality fork springs from:

• Öhlins

• K-Tech

• WP

• Showa / KYB Springs (Original & Replacement)

We check:

• Spring Rate

• Preload

• Fork Height

• Balance to your Shock Absorber

➡ Perfectly tuned steering & braking behavior.

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3. Shock Absorber Springs – Replacement & Adjustment

For the rear, we calculate and install:

• Öhlins Springs in all hardnesses

• K-Tech Springs

• WP Performance Springs

We then set:

• Static Sag

• Rider Sag

• Front/Rear Balance

• Spring Base

➡ Maximum traction during acceleration.

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4. Street, Track, or Racing-specific Springs

Springs vary significantly depending on application.

We offer:

Street

• comfortable response

• safe straight-line stability

• more stability in everyday use

Trackday

• stiffer setup

• precise steering

• minimal lift moment when braking

Racing

• maximum traction

• fast reactions

• perfect support at corner entry

➡ We calculate exactly what your bike needs.

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5. Analysis of current springs (in case of problems)

We recognize immediately:

• too hard springs

• too soft springs

• unharmonious balance front/rear

• front wheel sliding

• rear wheel pumping

• unstable steering

➡ Incorrect spring rate = bike handles poorly, no matter how expensive the Suspension is.

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🏁 Why spring calculation at TGP MotoRacing?

• over 17 years of experience in chassis dynamics

• Öhlins technology & service center

• professional measurement & setup tools

• specialization in supersport and racing

• exact calculation instead of estimates

• regional prime location: Munich – Erding – Ebersberg

The correct spring is the fundamental building block for any good setup.
Without it, no Suspension in the world works properly.

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📍 Spring rate calculation Munich – TGP MotoRacing

TGP MotoRacing
Between Erding & Ebersberg (A94)
Mon–Fri: 7:30–16:30