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Futures compatible. Depth 5.7” Base 4.9” Foil flat inner face Tab 3/4”
1. Upright outline
More vertical leading edge than a keel
Less rake (sweep)
Promotes quick pivot and tighter turning radius
2. Wide base
Strong base area gives drive and hold, especially off the bottom
Maintains speed through flat sections
Prevents the “skatey” feeling some upright twins can have
3. Medium tip height
Taller than many modern keel fins.
Helps balance release vs control
4. Foil style
Flat foil on the inside
Encourages speed and immediate response
Clean water release down the line
5. Overall feel in the water
The JAI template is best described as:
Fast
Loose but not uncontrolled
More pivot than a keel
More drive than ultra-upright performance twins
Best board pairings
Fish with moderate rocker
Modern retro twins
Shorter mid-length twins
Boards ridden with front-foot trim + back-foot pivot
Surf conditions it suits
Small to medium surf
Clean beach breaks
Points where speed + direction change matter
In short
The JAI twin fin template is a balanced upright twin that delivers speed, drive, and controlled looseness—ideal for surfers who want twin-fin flow without giving up directional control.
We include
Free Delivery: of all fins and accessories 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.
Express Shipping just $10 per order at checkout.
