Lost CA Twin
The Lost CA Twin is a high-performance twin-fin fish that blends retro-inspired speed with modern precision. Designed by Matt Biolos for surfers who want a fast, drivey, and responsive twin, the CA Twin offers the perfect mix of glide, rail-to-rail flow, and sharp turning ability — without the unpredictability some twins are known for.
With a slightly more performance-oriented outline than the classic RNF series, the CA Twin is built for surfers who want a twin that carves hard, accelerates instantly, and still feels loose and skatey when the wave allows. It’s a favorite for small-to-medium surf and a fantastic everyday alternative to a shortboard.
Who Is the Lost CA Twin For?
- Shortboarders looking for a lively small-wave board that still feels familiar and controlled.
- Twin-fin fans who want a board with more hold and drive than a traditional retro fish.
- Intermediate to advanced surfers who appreciate whip, release, and style in shoulder-high or below.
- Anyone who wants a fun, fast, high-performance twin for everyday conditions.
Lost CA Twin Design Features
Modern Twin-Fin Outline
The CA Twin sits between a modern fish and a high-performance shortboard. It has:
- A straighter rail line for speed and drive.
- A pulled-in swallow tail for hold through turns.
- A fuller outline than an HPSB but refined enough for critical surfing.
Foil & Volume Distribution
Extra foam under the chest improves paddling, while the tapered rails and refined tail keep the board sensitive on edge. It’s fast without feeling corky.
Bottom Contours
- Single to double concave for speed lift and rail-to-rail smoothness.
- Subtle vee behind the fins to help transition through turns — critical for twin-fin control.
Fin Setup
The CA Twin is a pure twin fin. No trailers, no quads — just clean, traditional twin-fin freedom with modern hold and stability engineered into the outline.
Construction Options
Depending on stock, you may find:
- PU/Poly construction — Classic feel, smooth rail engagement.
- EPS/Epoxy builds — Liveliness and flex for quick acceleration.
What Size Lost CA Twin Should I Ride?
Most surfers ride the CA Twin in a length 2–4 inches shorter than their daily-driver shortboard. The extra width and volume keep it paddle-friendly, while the shorter length adds to the snappy, skatey feel.
If you prefer more drive or plan on using it in punchier surf, consider sticking closer to your normal length.
Best Wave Range for the CA Twin
The CA Twin thrives in:
- Knee-high to head-high surf
- Long, playful point waves
- Beach breaks with room to draw lines
- Anyday conditions where you want more speed and flow
For even more small-wave glide, also check out the RNF Kingfish or the super-groveling Pisces.
Compare the CA Twin to Other Lost Models
- RNF '96 — More classic fish feel, looser and more playful.
- RNF Retro '23 — Retro outline with modern updates.
- Quiver Killer — More versatile everyday hybrid shortboard.
- Crowd Killer — Midlength with tons of paddle power.
Shipping & Pickup Options
The CA Twin ships nationwide with live UPS rates shown in the cart. Boards under 5'11" usually ship for $65–$120, while longer or wider boards typically run $150–$240, depending on location.
You may choose:
- Free in-store pickup at our Los Angeles surf shop
- Free Central Coast pickup — Santa Barbara, Pismo Beach, Morro Bay, Lompoc
Full details are available in our Shipping & Returns section.
When you buy a CA Twin from Rider Shack, you’re supporting a small, surfer-owned core surf shop — not a warehouse.
Lost CA Twin FAQ
Is the Lost CA Twin good for beginners?
The CA Twin is best for intermediate and advanced surfers. Beginners may prefer a more stable board such as a midlength or soft top.
How does the CA Twin compare to the RNF series?
The CA Twin offers more performance, drive, and hold compared to the looser, more classic-fish feel of the RNF models.
Can I ride the CA Twin in bigger surf?
It can handle punchy shoulder-high+ waves, but it’s not designed for powerful overhead surf. For larger waves, consider the Driver 3.0 or Ghost.
What fins work best?
The CA Twin performs best with a modern twin-fin template with good surface area. Upright twins offer tighter turning, while keel-style twins provide extra speed and hold.
Do you ship the CA Twin?
Yes — we ship nationwide, and you can also choose in-store pickup in Los Angeles or free Central Coast pickup.
