Caveworks has launched the Rivet, calling it the premier indoor bike for all indoor riders and the best value on the market.The Colorado company says the Rivet is a robust, high-performance indoor cycling frameset that can fit nearly every rider.Like the recently launched Zwift Ride, the Caveworks Rivet frameset stands on legs at the bottom of the fork.Caveworks says the Rivet can be mounted on most thru-axle, direct-drive smart trainers.You can buy the Rivet as a frameset at an introductory price of $699.99. If you dont want to add your own drivetrain, then singlespeed and geared builds are also available for additional cost. All three options will ship from October.Specifically designed for indoor useYou have a big choice of crank lengths. - CaveworksThe most common indoor cycling setups comprise of a road bike mounted to a turbo, or a dedicated indoor smart bike.The former enables you to take the bike off the trainer between turbo sessions if you dont have a dedicated indoor training space, or want to ride the bike outside.Weighing up to 20kg, smart bikes, on the other hand, are harder to move and cant be ridden outside, but multiple people can use the same bike because their fit is adjustable.With the Rivet, Caveworks is trying to provide the best of both worlds.Owners of carbon bikes may be concerned that indoor cycling will damage their carbon frame. Caveworks, however, says the Rivets steel frame is built to withstand the strain of indoor riding. The accompanying sweat wont corrode it either.The geared spec is supplied with 1x12-speed GRX. - CaveworksThe brand adds that the Rivet removes the need for people who own multiple bikes to leave one on the turbo trainer or, if you have one bike, to have to use it both indoors and outdoors.Weighing a claimed 13.5kg in all build options, the Rivet will be easier to move around than a smart bike, according to Caveworks. It is also said to occupy a smaller footprint than an outdoor bike.Widely compatible and adjustableCaveworks says its proprietary stem is highly adjustable. - CaveworksZwift has hinted that the Zwift Ride will eventually be sold as frameset, enabling you to mount it to different smart trainers and customise its components.But for the time being, the Rivet is designed as a more customisable option.Its 12x142mm rear hub spacing ensures compatibility with most thru-axle, direct-drive smart trainers. And the 12x110mm front axle will enable you to use indoor cycling accessories, such as the Wahoo Kickr Climb.Caveworks says the Rivet frameset will also be straightforward to build up to your preferences because it uses common industry standards. The 68mm threaded bottom bracket, for example, works with most cranksets and a 30.9mm seatpost will be relatively easy to source.Caveworks also describes the Rivet as one-size-fits-most. The frame is suitable for riders ranging in height from 4ft 10in (147cm) to 6ft 6in (198cm), according to the brand.The handlebar and saddle height, plus the reach, are adjustable so you can replicate bike fits for different disciplines, including mountain biking and gravel riding, according to Caveworks.Caveworks Rivet vs the Zwift RideThe singlespeed build relies on virtual shifting or ERG mode from a smart trainer. - CaveworksCaveworks claims the Rivet competes with the Zwift Ride on value, quality and practicality.For 1,199.99 / $1,299.99 / 1,299.99, the Zwift Ride includes a Wahoo Kickr Core. The equivalent singlespeed build of the Caveworks Rivet costs $999.99 without a smart trainer.Add in the cost of a smart trainer, though, and the Rivet will be more expensive.However, Caveworks says its modular indoor bike incorporates less plastic and more metal so will be more durable, and yet is lighter. The Rivet will also fit a wider range of riders and components, according to the brand.We havent tested either the Zwift Ride or the Caveworks Rivet yet, so keep an eye out for our reviews.Caveworks Rivet specifications and pricingItems like the saddle and seatpost can be replaced. - CaveworksThe Rivet will initially be available in three builds:Frameset: $749.99; introductory special: $699.99Rivet frame, proprietary stem, seat collar, thru-axles, clamps, UDH, ready to customiseSinglespeed: $999.99; introductory price: $949.99Complete build, ready to ride out of the box, designed for use with single-cog, virtual shifting-enabled smart trainers or for use in ERG modeGeared: $1,399.99; introductory price: $1,329.99 Complete build, ready to ride out of the box, Shimano GRX 1x12 speed drivetrainFrame: 4130 steel; 12x142mm rear axle spacing; 12x110mm front axle; 30.9mm seatpost; 68mm BSA threaded bottom bracket; front-end spacers help fit a range of thru-axle direct-drive smart trainers; 2 bottle cage options on the front legsStem: Proprietary adjustable stem, 6061 aluminium; 120mm of fore-aft adjustmentHandlebar: 42cm, 16-degree flare; Ergon BT Allroad bar tapeShifters: 'Dummy hoods' or Shimano GRXSeatpost: 30.9mm diameter, 450mm lengthSaddle: 143mm width, chromoly railsCrankset: 170mm, 172.5mm, 175mm lengths availableChainring: 48-toothChain: KMC X12Chain tensioner: Oversize 14t ceramic bearing pulley (singlespeed)Rear derailleur: Shimano GRX 12-speed (geared)