Our take on the ultimate all-round gravel bike. Go anywhere, bring everything and then keep on going.
A jack-of-all-roads with zero compromises. The Topstone 3 GRX 2X is built with Shimano GRX610/820 blended group gearing and KingPin suspension to handle rough roads and smooth out the ride. WTB wheels and tires grip through dirt, gravel, and whatever’s under your treads. It’s the bike that turns any ride into an adventure story worth telling.
What it's for
Gravel riding & racing, bikepacking, going hard and long on dirt or pavement
Highlights
- Lightweight full carbon frameset with Kingpin rear suspension, Proportional Response size-specific construction, and StashPort downtube storage
- A combination of Shimano’s 2x12-speed GRX gravel groups – top-end GRX820 mechanical derailleurs, with GRX610 cranks, brakes and shifters, offers a killer performance value
- Durable, dependable WTB ST i25 rims, with Shimano hubs and WTB Resolute 42c gravel tires
- Cannondale 3 flared handlebars offer comfortable, gravel-friendly hand positions
- Cannondale Wheel Sensor delivers hyper-accurate speed, distance and route info, service reminders, and more via the Cannondale App
Specifications
| Model Code | C15175U |
| Frame | Topstone Carbon, Kingpin suspension system, Proportional Response construction, downtube Stashport, internal cable routing, 12x142mm thru-axle, 27.2 dropper post ready, UDH, BSA 68mm threaded BB, flat mount disc, removable fender bridge, multiple gear/bottle mounts |
| Fork | Topstone Carbon, 1-1/8" to 1.5" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, triple bottle/gear mounts, fender mounts |
| Headset | Acros IS52/40 ICR |
| Rear Derailleur | Shimano GRX 820, Shadow RD+ |
| Front Derailleur | Shimano GRX 820 |
| Shifters | Shimano GRX 610, 12-speed |
| Chain | Shimano M7100, 12-speed |
| Crank | Shimano GRX 610, 46/30 |
| Rear Cogs | Shimano HG710, 11-36, 12-speed |
| Bottom Bracket | Shimano BSA 68 |
| Brakes | Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors |
| Brake Levers | Shimano GRX 610 hydraulic disc |
| Rims | WTB ST i25 TCS, 28h, tubeless ready |
| Spokes | Stainless Steel, 14g |
| Tire Size | 37 |
| Wheel Size | 700c |
| Hubs | (F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlock |
| Tires | WTB Resolute TCS Light, 700x42c, tubeless ready |
| Handlebar | Cannondale 3, butted 6061 Alloy, 16 deg flare, 120mm drop: 400mm (47cm), 420mm (51-54), 440mm (56-61cm) |
| Stem | Cannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51m), 80mm (54cm), 90mm (56-58cm), 100mm (61cm) |
| Grips | Cannondale KnurlCork, 2.7mm |
| Saddle | Selle Royal SRX Open |
| Seatpost | Cannondale 3, 6061 Alloy, 27.2x350mm |
| Extra 1 | Large StashBag downtube storage bag, tubeless valve stems |
Specifications from Cannondale and may change without notice.
Product Information
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Close all zippers before washing
Wash at max 30°C
Hand washing with cold water (or gentle wash cycle)Using mild, high quality detergent
Drip drying in shade, do not machine dry
Avoiding ironing and bleachThe instructions on your garment’s label
Sorting your clothing by color
Avoiding fabric softener.
Our clothing isn’t meant to be dry cleaned and soaking clothing is not ideal
Storage
Unused sealed sachets should be stored inside the box in a well-ventilated, dry place and protected from moisture, heat and direct sunlight. Can be stored for up to 3 years.
Size
Each sachet contains 30g powder.2 x 30g sachets per carton box.
Makes 2x litres of bike cleaner
100% plastic free packaging
Readily biodegradable ingredients
100% water free
Refill your old bottle and help reduce plastic waste
92% saving in packaging compared to 2 x 1L bike cleaner
100% environmentally friendly ingredients, including plant based raw materials
Supplied in a compostable sachet and printed with vegetable inks
FSC recycled card box containing 2 x sachets – that makes 2L of bike cleaner
Safe on all parts and surfaces including carbon fibre
Will not harm seals, cables, disc brake pads or rotors
Alkaline based and free from alcohol, CFCs, EDTA, solvents or acids
Vegan & vegetarian friendlyCruelty free, not tested on animals
Sachet Instructions
1. Grab your empty old bottle of Muc-Off. (You may need a pair of adjustable pliers to remove the trigger from the bottle). Or purchase our Bottle for Life.
2. Fill up to the shoulders of the bottle with 1 litre of lukewarm water for faster formula activation!
3. Carefully cut one corner of the sachet open along the diagonal cut lines.
4. You can carefully pour the sachet straight into the top of the bottle. Or using the box, fold the inside of the lid together using the printed lines as a guide and use this as a funnel to pour the powder into your bottle. (Please see our video for full instructions on this.
5. Screw your spray trigger back onto the top of the bottle. Ensure it’s tight!
6. Shake the bottle vigorously for 30-60 seconds to activate the formula. If you notice any undissolved powder simply keep shakin’ it!
7. Go clean that filthy bike!