Cannondale
Topstone Carbon 3 GRX 58 Ex-Display
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Overview
One chainring, endless possibilities. The Topstone 3 GRX - 1X delivers simplicity without sacrificing performance. A Shimano GRX610/820 blended group keeps shifting precise and reliable, while KingPin suspension takes the sting out of rough terrain. WTB tires keep you connected to the trail, making every ride a good one—whether it’s a quick lap or a full-day escapade.
Speed Shop Approved
Every used bike from Saddleback gets the full VIP treatment in our Speed Shop. Our skilled mechanics tear it down, check everything, replace what needs replacing and dial it in so it's ready to ride. You also get two years of warranty, because we stand by our products and work.
Ex-Display
These bikes haven’t seen a single ride – they’ve just been shown off in our showroom and at events. They might have the odd cosmetic mark (check the pics), but performance-wise, they’re dialled in and ready to roll. In this case, the paintwork has minimal damage but is almost like new.
These bikes don't hang around. If you see “the one,” don't sleep on it, as once they are gone, they're gone.
Multipoint Inspection
We’re riders, so we know what matters when you’re in the saddle. Our Speed Shop mechanics have given your bike a full, pro-level check to ensure it’s dialled in and ready to go. It’s been inspected for damage, with none having been identified. The wheelset has been checked for trueness and tension, while the bearings and tyre tubes have been inspected.
When it comes to the drivetrain, this has been inspected for wear, and the mech alignment has been checked, while the gears have been indexed. The brake calliper alignment has been checked, to ensure you can stop on a button.
The headset, bottom bracket and crank axle have all been cleaned and greased, so you can expect no creaks. The seat post has been fibregripped, so that it stays in place, and every bolt has been torqued to spec, ready to go.
Product information
Returning a product is easy using our Returns Portal, which allows you to send your product back to us by dropping off your return items at any one of over 8,500 EVRI locations around the UK.
You have 30 days to return your item from when it reaches you
If you wish to return a product under warranty, please see our Saddleback Warranty Information page for more information.
- Standard delivery (3-5 working days) - £3.50
- Express delivery (1-2 working days) £4.99
For more information on delivery times and prices click here.
Holiday shipping deadlines
To receive your order before the 25th, please place it by Friday, December 19th. We’ll continue shipping through December 24th, but orders placed after December 19th may not arrive until after the holidays.
Holiday office & service hours
Dec 25th – Jan 1st
Office Closed – our team will be offline during this time (no phone or email support)
Tue, Dec 30th
Limited Shipping – warehouse will be processing limited orders (delivery expected Jan 2nd or later)
Fri, Jan 2nd
Back to normal – phone and email support are open again
Technical specifications
| Category | Component | Specification |
|---|---|---|
| General | Platform | Topstone Carbon |
| General | Model Name | Topstone Carbon 3 GRX - 1x |
| General | Model Code | C15195U |
| Frameset | 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 | |
| Drivetrain | Rear Derailleur | Shimano GRX 822, Shadow SGS |
| Shifters | Shimano GRX 610, 12-speed | |
| Chain | Shimano M7100, 12-speed | |
| Crank | Shimano GRX 610, 40T: 165mm (47cm), 170mm (51cm), 172.5 (54-56cm), 175mm (58-61cm) | |
| Rear Cogs | Shimano SLX M7100, 10-51, 12-speed | |
| Bottom Bracket | Shimano BSA 68 | |
| Brakes | Brakes | Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors |
| Brake Levers | Shimano GRX 610 hydraulic disc | |
| Wheels | Rims | WTB ST i25 TCS, 28h, tubeless ready |
| Spokes | Stainless Steel, 14g | |
| Tire Size | 45 | |
| Wheel Size | 700c | |
| Hubs | (F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlock | |
| Tires | WTB Riddler TCS Light, 700x45c, tubeless ready | |
| Components | Handlebar | Cannondale 3, butted 6061 Alloy, 16° flare, 120mm drop: 400mm (47cm), 420mm (51-54cm), 440mm (56-61cm) |
| Stem | Cannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51cm), 80mm (54cm), 90mm (56-58cm), 100mm (61cm) | |
| Grips | Cannondale KnurlCork, 2.7mm | |
| Saddle | Selle Royal SRX Open | |
| Seatpost | Cannondale 3, 6061 Alloy, 27.2x350mm |
More Information
Delivery
- Standard delivery (3-5 working days) - £3.50.
- Express delivery (1-2 working days) - £4.99
For more information on delivery times and prices click here.
Returns
Returning a product is free and easy using our Returns Portal, which allows you to send your product back to us by dropping off your return items at any one of over 7,400 CollectPlus locations around the UK.
You have 30 days to return your item from when it reaches you.
For more information on returning items click here.
About Cannondale
About Saddleback
Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of Abbey Bike Tools, Castelli, Chris King, ENVE, HJC, Moots Cycles, Pivot Cycles, PUSH, Sidi, Silca, Sportful, Stages, Troy Lee Designs and Wolf Tooth.