The Concept
Classic Lines. Modern Composites.
The SI18 follows a more traditional path than Stellar's playful new hulls: hard chines, a defined keel and a retractable skeg give it the straight-tracking, predictable manners paddlers rely on for long crossings and rock-garden work.
Three sealed compartments swallow a full expedition load - 15.2 gallons in the bow and 33.3 in the stern - while a molded seat pad, thigh braces and a Smart Track footbrace keep you planted when conditions turn rough. This is a kayak built to cover distance without drama.
Features
Engineered for the Miles
Every feature earns its place on a long paddle.
Tracks True in Any Conditions
Hard chines and a defined keel hold a steady course in wind and beam seas. A retractable skeg adds grip when gusts build, and tucks away for tight maneuvering.
Comfort That Outlasts the Day
Molded seat pad and thigh braces keep you supported in rough water - the difference between a good day on the water and a great one.
A Footbrace That Fits You
The Smart Track footbrace adjusts in seconds and locks solid, so every stroke has a firm platform behind it.
48 Gallons of Dry Storage
Three sealed compartments - 15.2 gallons in the bow, 33.3 in the stern - swallow a full multi-day load, with a day hatch just forward of the cockpit for quick access.
Small Details, Big Comfort
A molded bottle holder and deck rigging keep water and small gear exactly where you need them, all day long.
Rock-Garden Tough
A hull that takes contact in stride - the SI18 is at home among rocks and shallows, not just on open water.
Specifications
Specs at a Glance
The numbers paddlers compare before they book a demo.
| Parameter | Value |
|---|---|
| Length | 17'11" / 5.5 m |
| Beam | 21.3" / 54 cm |
| Depth | 13.4" / 34 cm |
| Cockpit (W × L) | 17.3" × 31.9" |
| Paddler Fit | 5'0" – 6'6" / 1.5 – 2.0 m |
| Capacity | 320 lb / 145 kg |
| Bow Storage | 15.2 gal / 57.7 L |
| Stern Storage | 33.3 gal / 126 L |
| Compartments | 3 sealed |
| Skeg | Retractable (standard); over-stern rudder standard on Multi-Sport build |
Construction
Four Builds. One Hull.
From featherweight carbon to durable fiberglass - pick the build that matches how you paddle.
Industry Solutions
Choose the plan that suits you best.
Alpha (Woven)
Heat-cured epoxy woven Toray 3K carbon with Nomex honeycomb core. Extremely stiff and light - the ultimate paddling machine.
01
Excel ★ Most Popular
Kevlar-reinforced fiberglass laminate with Nomex honeycomb core. Very stiff and light, at a friendlier price than Alpha.
02
Multi-Sport
Carbon & Kevlar single-skin hull that flexes instead of cracking - at home in rapids, shallows or the open ocean. Includes over-stern rudder.
03
Advantage
Infused epoxy fiberglass with Soric core - tough and puncture-resistant. The best price-to-weight pick for most paddlers.
04
Colors
Available RAL Colors
Custom RAL colors are available on request.
FAQ
Q: Who is the SI18 built for?
A: Paddlers from 5'0" to 6'6" (1.5–2.0 m) who want a traditional, fast-tracking touring hull for long trips, expeditions and rock-garden paddling. If you prefer a more playful, surf-oriented boat, take a look at the NOMAD.
Q: How much gear can the SI18 carry?
A: A lot. Three sealed compartments total 48.5 gallons - 15.2 in the bow and 33.3 in the stern - plus a day hatch forward of the cockpit, within a 320 lb (145 kg) total capacity.
Q: Is an 18-foot kayak hard to paddle?
A: Not for most paddlers. Hard chines and a defined keel hold a straight course with less constant correction, and the hull is predictable at cruising speed. The SI18 fits paddlers from 5'0" to 6'6", so size itself is rarely the issue - it's about whether you want a boat built for distance.
Q: Does the SI18 come with a rudder or a skeg?
A: Both options exist. A retractable skeg is standard on every build. The Multi-Sport construction comes with an over-stern rudder as standard equipment, and other builds can be ordered with rudder plumbing.
Q: SI18 vs NOMAD - which one should I choose?
A: The SI18 is the traditional choice: hard-chine tracking, the biggest storage numbers in the touring family, and comfort features for long days. The NOMAD is the playful choice - sharper chines and more rocker for surf play, with expedition capability. Smaller paddlers should look at the NOMAD LV.
Q: Can the SI18 handle rough water and rock gardens?
A: Yes. The hull is designed for exactly that: hard chines give predictable edge control among rocks, the reinforced layup shrugs off contact, and the retractable skeg keeps you tracking when the wind builds.
CXFC is an agent of stellar carbdtandem surf ski and also a reliable manufacturer for carbon fiber products in China. With a professional engineer team, we are able to meet the needs of the majority of our cust. Please rest assured to buy customized stellar carbon fiber tandem surf ski from us.
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