
QD2 3.75" Thermotech (Default Title)
The QD2 3.75” Thermotech is a small sized quad rear with a symmetrical foil. Made in Huntington Beach, the Thermotech product line does not have the traditiona…
Adds to your Lundquist cart. Mix with boards and accessories — single Stripe checkout. Ships in 3–5 business days after a Lundquist QC pass.
Specs
- Fin box
- futures
- Foil
- —
- Rake
- —
- Base
- —
- Depth
- —
- Area
- —
- Weight
- 340 g
- Material
- composite
- Construction
- —
About this fin
The QD2 3.75” Thermotech is a small sized quad rear with a symmetrical foil. Made in Huntington Beach, the Thermotech product line does not have the traditional plastic feel of a composite fin. Instead, they have a consistent flex that creates drive and release through turns. This pair of Quad Rears can be combined with any Futures front fins to suit your riding preference, board design and waves. They will favor boards that have the rear boxes set off the rail, closer to the stringer. Template Category | Neutral (balanced, all-around) Construction | Thermotech Size | Small Quad Rear
New to quad setups?
Learn how foil, rake, and family choice shape the way a board rides.
More quad options

Album Mod Quad Fins (Default Title)
futures
The Album Mod Quad, designed by Album Surfboards surfer/shaper Matt Parker, is one of the most versatile split keel style quads available. Works in a variety o…

QD2 4" Thermotech (Default Title)
futures
The QD2 4” Thermotech is a medium sized quad rear with a symmetrical foil. Made in Huntington Beach, the Thermotech product line does not have the traditional…

F6 Legacy Quad (Default Title)
futures
The F6 Legacy Series Quad is a medium sized set in the Neutral template category. The honeycomb construction gives a balanced feel for all-around performance.…
Pair this fin with a Lundquist board
Every Lundquist board is built to your spec. Tell Blake what you’re after and he’ll dial in the fin recommendation with the shape.
Start a Custom Order