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★★★★★ 4.6 (2,476) reviews
£1,649
£1,799
Save £150

Premium home fitness
without monthly fees

Wattbike Proton is a premium home training bike built for guided workouts, accurate performance tracking and shared use at home - with no ongoing subscription costs.

Subscription-free training Access hundreds of workouts and plans through the Wattbike Hub
Easy to adjust and share Designed for different riders, goals and fitness levels
Track measurable progress Accurate real-time data helps you train with purpose
FREE UK DELIVERY Delivered in 3–5 working days
%

0% Finance
Available

Free Hub
Training App

2 Year
Guarantee

30 Day
Return

Or from £137 per month 0% APR with

Limited time only

Free Summer Bundle

with every Wattbike Proton purchase

Included in bundle
  • Cycling fan
  • Floor mat
  • Training towel
  • Hub+ (worth £80)
  • Water bottle
Bundle worth £262
Free Summer bundle
Worth £80
hu
Workouts
Range
Shifters
Accurate
Connectivity
Quiet

HUNDREDS OF FREE WORKOUTS

Free Wattbike Hub with every bike. Get access to 100s of workouts designed by top coaches.

UNRIVALLED RANGE

From 4" 6" to 6' 6", set up the Proton without tools in seconds. Extended seat and saddle post give a huge adjustment range to suit every rider.

DIGITAL SHIFTERS

Bluetooth-enabled shifters and electromagnetic resistance ensure smooth, responsive gear changes. Options for gear mode for manual shifting, or Ergo mode, which automatically adjusts resistance so you can focus on pedalling.

ASTONISHINGLY ACCURATE

Training takes effort. Wattbike Proton is accurate to 1% so you know that the effort is spent right. Complete workouts exactly as our sports scientists and coaches intended.

CONNECTS TO EVERYTHING

Train on your favourite apps connecting your phone/tablet via Bluetooth or ANT+ - including Zwift, Rouvy, Strava, FulGaz, Training Peaks and more.

TRAIN QUIETLY

The Proton's smooth electromagnetic resistance is quiet. Workout without waking up the family or setting your headphones to eleven.

Proton is a smart bike designed to make every family member feel like a pro.
T3

T3

Technology Publication

The Proton stands out not only for its competitive pricing but also for its compact design, smart-bike features, and free access to the Wattbike Hub.
Cycling Weekly

Cycling Weekly

Cycling Publication

This versatility makes the Proton a real winner if you're looking for a smart bike for a household with multiple users, or a family or couple wanting to share a bike.
Road CC

Road CC

Cycling Publication

You can connect any platform you want, or use Wattbike’s own extensive library of free workouts, plans, and more. Proton doesn’t require any subscription to anything.
DC Rainmaker

DC Rainmaker

Technology & Training Review

A compact, easy-to-use smart bike that makes quality indoor training accessible for the whole household.
Women & Home

Women & Home

Lifestyle Publication

Wattbike Hub app on iPhone and iPad

The Free Wattbike Hub App

Your training. Your progress.

The Wattbike Hub is your complete training ecosystem. No subscriptions. Just performance.

  • Free with Proton - No subscription needed
  • Structured training plans & workouts
  • VO₂ Max testing & Healthspan Score
  • Track performance & monitor progress
  • Sport-specific sessions including football
  • Works on phone, tablet & more
World class feedback
Customise gearing
Pedalling feedback
Instant performance
Build home screen
Pair with heart rate strip

Additional information

Key Features

Wattbike Proton is our most flexible smart bike — in both adjustability and goals. It fits the tallest and shortest riders and helps you train for every sport.

Make measurable improvements in your performance and health with Wattbike’s world-famous accuracy, realistic ride feel and guidance from hundreds of workouts, free on the Wattbike Hub.

  • Ride hundreds of workouts on the Wattbike Hub, completely free
  • Get riding quicker with tool-free adjustment
  • Fits riders from 4′6″ to 6′6″
  • Automatic resistance changes to control your workouts
  • Compatible with Strava, Zwift, ROUVY, TrainingPeaks and more

Full specifications

MODEL:Proton
HEIGHT:Max. 127cm
FRAME WIDTH:57cm
FRAME LENGTH:Max. 125cm
FOOTPRINT:102 x 57cm
BIKE WEIGHT:48kg
BOXED WEIGHT:50kg
FRAME:Steel
SEAT AND HANDLEBAR STEMS:Aluminium
COVERS:Heavy-duty ABS plastic construction
FEET:Rubber height adjustable
TRANSPORTATION ROLLERS:Yes
INTEGRATED GEAR SHIFTERS:Yes
GEARS:1 - 22
CRANKS:170mm
SEAT:Hybrid comfort seat
PEDALS:Flat pedals with toe cage fitted as standard
CHAIN:Industrial 1/2" x 1/8" steel
BELT:T15 Timing belt
HANDLEBAR HEIGHT ADJUSTABILITY:Range 51 - 80cm
HANDLEBAR FORE/AFT ADJUSTABILITY:Range 0 - 23cm
SEAT HEIGHT ADJUSTABILITY:Range 49 - 83cm
SEAT FORE/AFT ADJUSTABILITY:Range 0 - 20cm
ACCURACY:+/-1%
POWER RANGE:0 - 1800w
RESISTANCE:Electromagnetic
THIRD PARTY CONNECTIVITY:ANT+, Bluetooth, FTMS
THIRD-PARTY APP SMART FUNCTIONALITY CONTROL:Any ANT+FEC Bluetooth FTMS enabled app inc Zwift, ROUVY, TrainerRoad, FulGaz, MyWhoosh
GRADIENT:0 - 25%
Q FACTOR:160mm
MAX. RIDER WEIGHT:135kg
RIDER HEIGHT:4′6″ - 6′6″
EXTERNAL POWER REQUIRED:Yes

Connectivity

APP COMPATIBILITY We support any apps that are ANT+ (inc FE-C) or BLE (inc FTMS) compatible
METRICS MEASURED We measure over 37 metrics about your riding and display them in the Wattbike Hub
THIRD-PARTY APP SMART FUNCTIONALITY CONTROL Any ANT+FEC Bluetooth FTMS enabled app inc Zwift, ROUVY, FulGaz & MyWhoosh
OFFLINE USE Wi-Fi is required for initial login/signup. Ride offline and sync later when connected

What's included

  • Wattbike Proton
  • Free Wattbike Hub app
  • Allen keys & spanners
  • Mains power adapter
  • Adjustable device holder
  • Handlebars
  • Flat pedals with toe cage (fitted as standard)
  • Hybrid comfort saddle
  • Quick start guide