1.9" Nubster/Twinzer Side Fins or Mini Quad Rears, black Pro Glass. FCS compatible set of two fins.

FCS compatible. Depth 1.9" Base 3.75" Foil flat inside face Cant angle 0 degrees

These robust solid fiberglass fins with a machined finish, compatible with FCS, are incredibly versatile with the single FCS compatible tab. Use them in the forward or rear hole, for advanced control. Also suitable as mini rear quads.

Twinzer fins are a distinctive surfboard fin setup that combines elements of both twin fins and quad configurations — designed to increase speed, release, and responsiveness.

🏄‍♂️ Core Design of a Twinzer set up

• Four fins total: two larger main fins (like a twin fin) and two smaller front fins placed slightly ahead and closer to the stringer.

• The front fins redirect water flow onto the inside face of the main fins, improving lift and drive.

• ⚙️ Key Features

  1. Increased Speed

     • The front fins pre-condition the water, allowing it to flow more efficiently over the main fins.

     • This reduces drag and enhances speed down the line compared to standard twins or quads.

  2. Better Hold and Drive

     • While twins can feel loose in steeper sections, twinzers add extra grip and drive — especially when carving on rail.

     • They maintain a smooth, flowing feel while offering more control in critical turns.

  3. Improved Release

     • The front fins channel water to the main fins, helping them “release” more cleanly when you push through turns or perform snaps.

  4. Looser than a Quad, Tighter than a Twin

     • Sits between the twin’s free feel and the quad’s hold.

     • You get twin-style glide and speed with a touch of extra stability.

  5. Optimized for Certain Tail Shapes

     • Commonly paired with fish, swallow, or round tails, especially on small- to mid-sized surfboards.

     • The design complements shorter boards with wider tails that need extra hold.

  6. Best in Small to Medium Waves

     • Great for waves where you want to generate your own speed and flow.

We include

Free Delivery: Everywhere in Australia.

Tracking: Quick & easy online tracking on all fins. 

Peace of Mind: All our fins are insured against loss in transit.

Prompt Australian Dispatch: All items are sent from stock held in Sydney on the same or next business day.

Returns: 30-day, no questions asked returns, for unused full price items.

No More to Pay: No surcharges added at the checkout.