New Hydroformed Aluminium Frame Weighs Just 1399 Grams
What Makes the Crux DSW a Lightweight Marvel?
Specialized has introduced the Crux DSW, an aluminium gravel bike they claim is the lightest in its class. Weighing just 1399 grams for a 56cm frame, this bike aims to combine durability with impressive performance. The complete bike weighs 9.37kg, setting a new standard for lightweight gravel bikes.
How Does D'Aluisio Smartweld Technology Enhance the Frame?
The Crux DSW owes its lightweight and strength to Specialized’s D'Aluisio Smartweld (DSW) technology. This method, also used in the Allez Sprint, involves hydroforming, which uses high-pressure fluid to shape the aluminium. This precise technique ensures stronger and lighter joints, as the tubes meet exactly as the engineers intend without the need for additional shaping or "mitring."
The frame's construction includes a single-piece downtube and bottom bracket, which forms the core structure. The remaining tubes are then welded to this section, allowing for added material in high-stress areas. This results in a durable frame without the extra weight typical of older welding methods.
Key Features of the Crux DSW
Smartweld Technology: The DSW process, also used in the Allez Sprint, enhances the frame's strength and durability by adding material at the ends of the tubes where they are welded.
Frame Construction: A single-piece downtube and threaded bottom bracket form the core of the Crux DSW, with the other tubes welded to this section. This design places extra material in high-stress areas, optimizing ride performance without overbuilding the frame.
Geometry and Fit: The Crux DSW retains the performance-oriented geometry of the carbon Crux, offering an extended reach and low stack for a balanced ride. The 72mm bottom bracket drop provides stability and nimbleness, crucial for gravel riding.
Fork and Tyre Clearance: Paired with a Fact 12r carbon fork, the Crux DSW offers tyre clearance up to 47mm, or 2.1 inches with a 650B wheel, making it versatile for various terrains.
How Much Does the Crux DSW Cost and When Will It Be Available?
The Crux DSW frameset is available in two color options: Gloss Amber Glow and Satin Metallic Spruce, priced at $1,700. For those looking for a complete build, it comes in Gloss Birch/Clay and Satin Smoke/Oak Green for $2,600. The complete bike features 12-speed SRAM Apex components, 40T x 11-44t gearing, DT G540 wheels, and Specialized Pathfinder Pro 38mm tires.
Technical Specifications for the Crux DSW Frameset
| Specification | Details |
|---|---|
| Price (preorder) | $1,700 |
| Frameset | |
| Frame | Specialized E5 Premium Aluminum Disc frame with D'Aluisio Smartweld Technology, hydroformed aluminum tubing, tapered head tube, threaded BB |
| Seat Binder | Specialized Alloy, 30.8mm |
| Suspension | |
| Fork | S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Weight | |
| Weight | 1.98kg (4 lb, 5.8 oz) |
| Weight Size | 56 |
Technical Specifications for the Specialized Crux DSW Comp
| Specification | Details |
|---|---|
| Price | $2,600 |
| Stem | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise |
| Handlebar | Specialized Adventure Gear, 118.9mm drop x 70mm reach x 12º flare |
| Fork | S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Seatpost | Alloy, 2-bolt Clamp, 12mm offset, 27.2mm, anti-corrosion hardware |
| Crankset | SRAM APEX XPLR, 40t |
| Shifters | SRAM APEX, 12sp |
| Saddle | Body Geometry Power Sport, steel rails |
| Derailleur: Rear | SRAM APEX XPLR, Mechanical |
| Cassette | SRAM PG 1231, XPLR, 11-44 |
| Chainrings | 40t |
| Bottom Bracket | SRAM DUB BSA 68 Wide |
| Front Brake | SRAM APEX, Hydraulic Disc |
| Rear Brake | SRAM APEX, Hydraulic Disc |
| Frame | Specialized E5 Premium Aluminum Disc frame with D'Aluisio Smartweld Technology, hydroformed aluminum tubing, tapered head tube, threaded BB |
| Wheels / Rim | Front - DT G540, Centerlock Disc, Tubeless Ready, 25mm internal widthRear - DT G540, Centerlock Disc, Tubeless Ready, 25mm internal width |
| Front Tyre | Pathfinder Pro 2BR, 700x38 |
| Rear Tyre | Pathfinder Pro 2BR, 700x38 |
| Tube | 48mm Presta Valve, 700X28-38 |
| Weight | 9.37 kg |
| Colours | Gloss Birch/Clay and Satin Smoke/Oak Green |
