ROTHBIKE FIT

Product roadmap

Fit first. Choose the next bike later.

Roth is focused on making the first guided fit dependable. Bike sizing, multi-bike tools, and electric-bike support stay here until their data, compatibility, and customer paths are ready.

Planned product preview

Fit-first bike sizing

Use your fit before choosing your next bike.

Roth’s planned sizing experience will compare real model geometry against your saved riding position—not just a height chart.

01Record your fit targetBody dimensions, mobility, and confirmed contact points.

02Compare real geometryBrand, model, year, and size with sourced dimensions.

03Check practical changesStem, spacers, bars, saddle range, and shop verification.

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PLANNED SIZINGCompare bikes
Planned preview
YOUR FIT ENVELOPEStack 578–594 · Reach 378–390
AENDURANCE MODEL · 54Fits with ordinary changes90 mm stem · 20 mm spacers
BRACE MODEL · 56Shop verification neededLonger reach · lower front end

Illustrative sizing concept. Geometry-backed sizing is not live yet.

Future product direction

Everyday riders

A better fit should meet you where you ride.

Roth currently supports eligible adult road, gravel, and indoor-bike setups. Electric-bike support is not available yet; these scenes show the riders and practical bikes we want the future experience to serve.

Generated concept of an adult woman riding a step-through commuter e-bike on a wheel-on indoor trainer while a phone records the full side view.Generated visual concept · unbranded e-bike
COMFORT-FIRST COMMUTER

Start with the bike you actually own.

Upright bars, a step-through frame, and everyday riding clothes should feel normal—not like an exception.

Generated concept of an average-build adult man riding a fat-tire commuter e-bike on a wide wheel-on indoor trainer while a phone records from the side.Generated visual concept · unbranded fat-tire e-bike
FAT-TIRE COMMUTER

Everyday riders deserve a useful fit.

The future e-bike path is meant for people who ride for comfort, errands, confidence, and fun—not only athletes on race bikes.

Generated concept of an adult man riding a practical commuter e-bike on a wheel-on indoor trainer while a phone records from the side.Generated visual concept · unbranded e-bike
REAL-WORLD EQUIPMENT

Clear guidance should not require a race setup.

Future e-bike support will keep the room, phone, and next-step instructions simple and readable.

E-bike compatibility has to come first.

Bike weight, motor location, axle hardware, tire width, trainer rating, adjustable parts, and manufacturer instructions must all be checked before Roth can offer an electric-bike fit.

See supported bikes
ROTH BIKE FIT

Ready to help test the full path?

Request a founding-rider place. Enrollment does not collect payment or create an account.

Request a founding-rider place