MR style Rear Stabiliser Surfboard Trailer Fin Australia | FCS II Twin Fin Trailer Fin

Transform your twin fin into a more versatile setup with the MR style Rear Stabiliser Trailer Fin for FCS II fin systems.

Designed to complement MR-style twin fins and other twin + trailer (2+1) surfboard setups, this rear stabiliser fin adds drive, control and hold while preserving the speed, flow and freedom that make twin fins so popular.

Whether you're surfing small beach breaks, punchy points or more powerful waves, the MR Trailer Fin lets you fine-tune your board's performance to match the conditions. Ride it with the trailer fin installed for extra grip and projection through turns, or remove it to enjoy the fast, loose and skatey feel of a traditional twin fin.

A simple fin change can completely transform the way your surfboard rides.

Why Use a Trailer Fin?

Twin fins are known for their speed and maneuverability, but some surfers want a little more control when the waves get bigger or more powerful.

The MR Rear Stabiliser Fin provides:

• Increased drive through turns

• Improved hold and control

• Greater stability at speed

• More confidence in steeper waves

• Smooth rail-to-rail transitions

• Enhanced projection without sacrificing the twin fin feel

It's the perfect balance between a classic twin fin and a thruster.

Tune Your Twin Fin For Different Conditions

One of the biggest advantages of a twin + trailer setup is versatility.

Use the trailer fin when:

• Surfing larger or more powerful waves

• You want extra grip through turns

• Looking for more control and stability

• Driving harder off the bottom

Remove the trailer fin when:

• Surfing small, playful waves

• You want maximum speed and freedom

• Looking for the classic loose twin fin feel

• Enjoying a more skate-inspired style of surfing

Experiment and discover the setup that suits your surfing.

Features

• Rear stabiliser trailer fin for twin fin surfboards

• Compatible with FCS II fin systems

• Ideal for MR twin fin and twin + trailer (2+1) setups

• Adds drive, hold and control

• Maintains the speed and responsiveness of a twin fin

• Easy way to customise surfboard performance

• Suitable for a wide range of surf conditions

Specifications

• Fin System: FCS II

• Configuration: Twin + Trailer (2+1)

• Base: 84mm (3.31")

• Depth: 85mm (3.35")

Frequently Asked Questions

What does a trailer fin do?

A trailer fin adds stability, hold and drive to a twin fin surfboard while maintaining much of the speed and manoeuvrability that twin fins are known for.

Is this compatible with FCS II?

Yes. This trailer fin is designed for surfboards fitted with an FCS II centre fin box.

Can I remove the trailer fin?

Absolutely. Many surfers swap between a pure twin fin setup and a twin + trailer configuration depending on the wave conditions and the feel they want.

Who is this fin best suited for?

It's ideal for surfers riding MR-style twin fins or any FCS II twin + trailer setup who want greater control without sacrificing the lively performance of a twin fin.

Will this fit any twin fin?

This fin is designed for surfboards that use a twin + trailer (2+1) configuration with an FCS II centre fin box. Always check your board's fin system before purchasing.

Add versatility to your surfboard with the MR Rear Stabiliser Trailer Fin for FCS II and enjoy the freedom to switch between a loose twin fin and a more controlled twin + trailer setup in seconds.