Singletrack/MTB
Gravel/All-road
Dirt-road Touring
Fat-bike
Just announced, the new 2025 Specialized Chisel has a revolutionary alloy frame constructed with D’Aluisio Smartweld, a patented technology that Specialized claims results in the lightest alloy full-suspension XC bike available. Find all the details here…
The new 2025 Specialized Chisel has a lot to live up to. In their press release, Specialized claims to have made the lightest alloy full-suspension XC bike available, with a frame that “rides like an absolute dream” and exceptional handling and ride quality. To back this, Specialize quotes the Chisel frameset at a weight of 2,720 grams versus the 3,290 grams (+570) Scott Spark Alloy and 3,740 grams (+1,020) Trek Top Fuel Alloy frames. They accomplished this by pioneering and patenting a totally new way to weld alloy bikes called D’Aluisio Smartweld, named after the engineer who created it, Chris D’Aluisio.
About D’Aluisio Smartweld
Typical alloy frame construction joins tubes with welds at the highest stress points. The concept behind D’Aluisio Smartweld is that it enhances strength and reduces weight by using hydroformed tube junctions, which move the joint away from the highest stress areas and create a “valley” for the weld bead. The resulting frame design is a highly manipulated tubeset featuring continuously varied wall thicknesses and shaping, which Specialized insists provides stiffness for efficiency and compliance for comfort. Those seem like bold claims, but here’s a little more about the frame.
One-piece Seat Tube/Bottom Bracket
Alloy bike frames traditionally have a seat tube that’s a separate component with pivots and the bottom bracket shell welded on. The Chisel’s frame is different and reduces extra material and weight by featuring a one-piece hydroformed seat tube that integrates the seat tube pivot, main pivot, and bottom bracket shell.
Flex Stay
The Chisel features a flex stay rear end for class-leading suspension performance, eliminating the extra weight and maintenance associated with traditional pivot designs. Extensive field and lab testing demonstrate that the Chisel achieves the efficiency, control, and lightweight benefits of a flex stay design using advanced alloy typically seen in carbon bikes.
2025 Specialized Chisel Geometry
The 2025 Specialized Chisel’s geometry is based on the Epic 8, Specialized’s World Cup race bike. Advanced suspension kinematics, Ride Dynamics tuned suspension, and progressive geometry from the Epic 8 are all incorporated into the Chisel. Specialized touts that these characteristics allow it to handle more aggressive trails and terrain with confidence and speed. Here are the numbers:
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| STACK | 602.3mm | 593mm | 606mm | 620mm | 629mm |
| REACH | 390mm | 415mm | 445mm | 470mm | 495mm |
| HEAD TUBE LENGTH | 95mm | 95mm | 110mm | 125mm | 135mm |
| HEAD TUBE ANGLE (LOW) | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° |
| HEAD TUBE ANGLE (HIGH) | 67° | 67° | 67° | 67° | 67° |
| BB HEIGHT (LOW) | 326mm | 336mm | 336mm | 336mm | 336mm |
| BB HEIGHT (HIGH) | 332mm | 342mm | 342mm | 342mm | 342mm |
| BB DROP (LOW) | 46mm | 36mm | 36mm | 36mm | 36mm |
| TRAIL | 113mm | 113mm | 113mm | 113mm | 113mm |
| FORK LENGTH, FULL | 530mm | 530mm | 530mm | 530mm | 530mm |
| FORK RAKE/OFFSET | 44mm | 44mm | 44mm | 44mm | 44mm |
| FRONT CENTER | 682mm | 706mm | 742mm | 773mm | 802mm |
| CHAINSTAY LENGTH | 437mm | 437mm | 437mm | 437mm | 437mm |
| WHEELBASE | 1,115mm | 1,141mm | 1,177mm | 1,208mm | 1,237mm |
| BIKE STANDOVER HEIGHT | 756mm | 777mm | 777mm | 787mm | 790mm |
| SEAT TUBE LENGTH | 375mm | 392mm | 410mm | 450mm | 500mm |
| SEAT TUBE ANGLE | 75.5° | 75.5° | 75.5° | 75.5° | 75.5° |
| TOP TUBE LENGTH, HORIZONTAL | 527mm | 565mm | 602mm | 634mm | 664mm |
Standard component specs on the new Chisel include:
- Cockpit: 29mm rise bars
- Fork: 120mm travel RockShox fork
- Shock: 110mm of rear wheel travel (metric 190×40) Dropper: Dropper posts on all models
- Brakes: SRAM Level T Brakes
- Front Tire: Ground Control 2.35
- Rear Tire: Fast Trak 2.35
The 2025 Specialized Chisel is available as a frameset for $2,000 or as a complete for $2,600 (base Shimano build) or $3,400 (Comp Shimano build). Find all the details over at Specialized.com.
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