• Weston Gnarnia Splitboard with a mountain design and viking woman wearing a wolf headpiece on a black background in the art style of John Fellows
  • Weston Gnarnia Splitboard leaning against a stone and wooden cabin in the snow
  • Close-up of the Weston Gnarnia Splitboard with a Viking woman wearing a wolf headpiece design against a rock wall background
  • Splitboarder holding two halves of the Weston Gnarnia Splitboard with mountain designs against a building and stone wall background
  • Close-up of the Weston Gnarnia Splitboard with a mountain graphic in the snow
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Gnarnia Splitboard

Gnarnia Splitboard

$ 989.00 USD
$ 989.00 USD
Sale Sold out
  • Free Skins w/ Full Price Split Purchase! Add skins and use code: SHOWMESOMESKIN at checkout. (not combineable with other discounts)

In stock

Send it deeper, float it steeper - this is your big freeride weapon. Skintrack to Summit to Send.

The Gnarnia Splitboard is Weston’s go-to for riders chasing big objectives in variable conditions - designed to charge hard, float deep, and adapt to whatever the backcountry throws at you. A moderate taper (~9mm) and setback stance gives you effortless float on storm days, while maintaining stability and control on steep, firm descents.

Under the hood, it’s built with our Freedom Split Core - a lightweight combo of poplar and paulownia with bamboo stringers for durability, power, and uphill efficiency. Tip to Tail Carbon Stringers enhance skintrack response and provide torsional stiffness for confident downhill performance plus S-Weave Carbon woven into the core loads up that “send it to the moon” pop. The Rugged Topsheet resists chipping and scratching, while the Sintered Durasurf 4001 Base keeps things fast even when the snow gets sticky.

To dial it in for touring, we feature our SplitTech design with inside edges optimized for skinning traction and tail-shifted balance for easier kick turns and smoother touring, Stainless Steel Edges and Full-Perimeter UHMW Sidewalls for long-term durability. It’s also compatible with our Skinlock System for secure skin attachment and easy transitions. Designed with input from Weston athletes and guides, every line, flex, and tech choice is rider-driven and built to last - backed by our 4-Year Warranty and Board Slayer Program.

From long alpine missions to powder-stacked trees, the Gnarnia Split balances weight, performance, and durability - making it a true quiver killer for freeride-focused backcountry riders.

Designed in Colorado, Manufactured at GP87
Artwork by: John Fellows 







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S-Weave Carbon

Carbon weaved through the core from topsheet to base and back to create maximum pop.

Tip to Tail Carbon Stringers

2x Carbon Stringers run tip to tail in each half of the splitboard creating longitudinal stiffness and fluid turns

Split-Tech

You’ll see a full inner metal edge, complete with sidewall and dampening tape. Also, when facing a kickturn on a steep slope, you want all the help you can get - that’s why we balance our splits so that they are tail heavy.

Bamboo Inserts

Reinforced bamboo at binding mounts adds strength, prevents pull-outs, and keeps flex consistent for long-lasting splitboard durability.

LAYUP

Freedom Split Core

The pairing of paulownia and poplar is like having a helium infused board. This lightweight combination minimizes weight and maximizes performance, meaning more of your effort can go towards having fun, instead of getting dragged down by a heavy board. Paulownia has one of the best strength-to-weight ratio of any wood on the market, making it the ideal wood for cores. This build has a slightly softer flex and is designedto be super lightweight yet responsive for our ladies of shred.

Triax Fiberglass

Balanced, bombproof flex. From groomers to glades.

Sintered DuraSurf 4001 Base + Holeless

Fast ride, more durable, good wax retention. It's the gold standard in bases. The 4000-series sintered base have a higher density than other options on the market, leading to better durability. Additionally, this structure absorbs more wax, making for a faster and smoother ride*. 4000-series PTEX is usually reserved for only top-of-the-line boards due to a higher manufacturing cost, but at Weston we use these on every board we make.

*With great power comes great responsibility. Higher wax absorption means the wax will also release faster and requires waxing more often. If you can’t remember the last time your board has been waxed, it's probably due. A quick coat every couple of rides will keep your board lightning fast.

MATERIALS

Rugged Topsheet

Think Rhino-Liner for your snowboard. This topsheet is bomb-proof and is designed to resist scratches and chipping. Plus its hydrophobic properties help to shed snow and prevent buildup. And if you weren’t sold already, it's made of castor beans instead of petroleum products, reducing the environmental footprint. The only downside is stickers don’t like to stick to it… but that's what helmets are for anyways.

UHMW (Ultra-High Molecular Weight) Sidewalls

Highly durable and impact resistant. Takes the hits. Keeps charging.

Carbon Steel Edges

Our edges are built with carbon steel, chosen for its balance of sharpness, strength, and longevity in real mountain conditions. Different rockwell hardness variants are used across our lineup to dial in performance - harder edges that hold sharpness longer for freeride and split models, and slightly softer ones for freestyle where durability and crack resistance matter most.

Each edge is precision-tuned for maximum grip when it counts - on steep couloirs, icy traverses, and firm morning groomers - while still delivering a smooth, responsive ride in deep pow. Built to take a beating and keep carving, our carbon steel edges are designed for the long haul, season after season.

SUSTAINABLE FEATURES

  • Bio-Based Topsheets

    A portion of these topsheets are derived from Castor Beans, reducing the need for petroleum based products.

  • Solvent-Free Inks

    The inks in our graphics generally use natural carriers and have low to no VOCs, making them safer to work with and better for the environment.

  • Flax Fibers

    Flax fibers provide great characteristics when it comes to strength and dampening, while being derived from natural plants.

  • Sustainably Sourced Cores

    The wood in the cores is grown and harvested from plantations instead of from natural forests, making the process less invasive and destructive.

  • Die-Cut Bases

    Solid color die-cut bases reduce the waste created by other graphics approaches, and the black is more easily repaired.

  • Recycled Material In Edges

    The edges use upwards of 50% recycled materials, reusing scrap in production and reducing the need for virgin materials.

  • VOC Free Epoxy

    The epoxy we use is VOC free, making it safer to work with and better for the environment without sacrificing durability or performance.

FEATURES

  • Wood Composition || Poplar | Paulownia | Bamboo
  • Shape || Tapered Directional
  • Camber Profile || Freeride
  • Topsheet || Castor Bean Based Rugged Nylon
  • Layup Fibers || Tri-Axial Fiber Glass
  • Carbon Fiber Stringers || 1x Tip to Tail + S-Weave
  • Base Material || Sintered Durasurf 4001 + Aluminum Tip + Holeless
  • Sidewall || Ultra-High-Molecular-Weight Polyethylene (UHMW)
  • Split-Tech || Shifted Touring Bracket Position
  • Clips || Karakoram UltraClip 2.1
  • Tip & Tail Clips || Karakoram Tip-Loc
  • Skin Attachment || Tip Holes + Tail Notches

AWARDS

2026 Backcountry Mag Gear Guide Select

SIZING

Size (cm) Recommended Rider Weight (lb / kg) Recommended Rider Height (in / cm) Max Boot Size (US Men) Max Boot Size (US Women) Mondo Euro
147 90-150 / 41-68 61-65 / 1.55-1.65 8 9 26 40.5
151 105-165 / 48-75 64-68 / 1.63-1.73 8 9 26 40.5
154 105-165 / 48-75 64-68 / 1.63-1.73 9.5 10.5 27.5 42.5
158 125-185 / 57-84 67-71 / 1.70-1.80 10 11 28 43
162 145-205 / 66-93 69-74 / 1.78-1.88 12 13 30 45.5
162W 165-225 / 75-102 69-74 / 1.78-1.88 14 15 32 48
166W 180+ / 82+ 73+ / 1.85+ 14 15 32 48

SKIN COMPATIBILITY

Size Skin Selection
147 Splitboard Skin 1
151 Splitboard Skin 1
154 Splitboard Skin 2
158 Splitboard Skin 3
162 Splitboard Skin 4
162W Splitboard Skin 5
166W Splitboard Skin 5

SPECS

Gnarnia Splitboard Specs

Size (cm) Effective Edge (cm) Sidecut (mm) Waist Width (cm) Tip / Tail Width (cm) Taper (mm) Setback (mm) Board Weight (lb / g)
147 112 9.3/7.4/7.1/8.4 24.4 28.8 / 27.9 9 10 6.07 / 2760
151 115 9.5/7.6/7.3/8.6 24.6 29 / 28.1 9 10 6.485 / 2950
154 119 9.7/7.8/7.5/8.8 25.2 29.9 / 29 9 20 6.88 / 3130
158 122 9.9/8/7.7/9 25.6 30.4 / 29.5 9 20 7.18 / 3260
162 125 10/8.1/7.8/9.1 26.2 31.0 / 30.1 9 20 7.54 / 3430
162W 125 10/8.1/7.8/9.1 27.3 32.2 / 31.3 9 20 7.88 / 3580
166W 128 10.2/8.3/8/9.3 27.6 32.7 / 31.8 9 20 7.87 / 3580

4-YEAR WARRANTY

We're pumped to offer one of the longest warranties in the industry. We offer a 4 Year Warranty because we believe in creating bomber product. Our boards should last as long as possible to reduce the impact on mother earth. LEARN MORE.

SHIPPING

Shipping is generally 3-5 business days but may take longer depending on location. We ship from Denver and our warehouse is open Mon-Fri. Delivery dates are never guaranteed. Ask info@westonbackcountry.com for special requests for expedited shipping and / or finding a dealer.

We ship through UPS and USPS, if shipping is not available to your address please send an inquiry to info@westonbackcountry.com

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