Tech 39mm Fork Spring - Ally & Steel Forks

Fine-tune your suspension with genuine Tech replacement fork springs. To ensure compatibility, please identify your fork type by the colour of the top caps before ordering.

Springs for Aluminium Stanchion Forks (Red Top Caps):

Outer Diameter: 30mm
Length: 415mm

Spring Options:
Soft: Wire $\varnothing$ $4.7\text{ mm}$ | 8 tighter coils | 7.2-8.9N/mm
Medium: Wire $\varnothing$ $4.7\text{ mm}$ | 12 tighter coils | 7.1-9.9N/mm
Stiffer: Wire $\varnothing$ $4.8\text{ mm}$ | 15 tighter coils | 7.8-12.5N/mm``

Superlight Soft: Wire $\varnothing$ $4.5\text{ mm}$ | 8 tighter coils | 7.2-8.6N/mm
OD 30mm, Length 370mm plus 45mm plastic spacer to make it 415mm so it will fit the all the aluminium forks.

Springs for Steel Stanchion Forks (Gold Top Caps):

Outer Diameter: 34mm
Length: 390mm

Spring Options:
Soft: Wire $\varnothing$ $4.9\text{ mm}$ | 6 tighter coils | 7.4-9N/mm
Medium: Wire $\varnothing$ $5.0\text{ mm}$ | 11 tighter coils | 7.2-10.3N/mm
Medium/Stiff: Wire $\varnothing$ $5.0\text{ mm}$ | 15.8 tighter coils | 36 total coils | 7.4-12.8N/mm
Stiff: Wire $\varnothing$ $5.0\text{ mm}$ | 16.5 tighter coils | 34 total coils | 7.5-14.3N/mm
Extra Stiff: Wire $\varnothing$ $5.0\text{ mm}$ | 13.5 tighter coils | 8-14.2N/mm Discontiuned

Select Spring Weight:
Use our general guide to select the appropriate spring rate based on the rider's weight (including gear).

Soft: For riders under $75\text{ kg}$ ($165\text{ lbs}$)
Medium: For riders between $75\text{ kg}-90\text{ kg}$ ($165-198\text{ lbs}$)
Stiffer: For riders over $90\text{ kg}$ ($198\text{ lbs}$)

Important Note on Factory Fitment

While the medium spring is the most common factory fitment, please be aware that this can vary. We recommend checking your current setup if you are unsure.

• Models that may have SOFT spring as standard:

  • Vertigo (Fork Part No: 152239118, 152239151, 152239152, 152239153)

  • Electric Motion (Fork Part No: 151239182)

  • Scorpa (Fork Part No: 151239191, 151239192)

  • Sherco & Scorpa (2023 onwards)

  • Some TRS models

• Models that may have STIFF spring as standard:

  • Montesa Cota 4RT (Fork Part No: 151239126, 151239129)