Kickstarter Success · 100+ Units Shipped

The Crank That
Shifts Everything

Two speeds. One crank. No derailleur needed. Just back-pedal to shift — works with chain and belt drives.

Contavelo Easy Ride 2-Speed Crank
SCROLL

Why single-speed cranks
hold you back

Most riders struggle with gear systems that are either too simple or too complex. There's been no middle ground — until now.

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Hill climbing kills your momentum

Single-speed bikes force you to choose — gear for speed or gear for climbs. You can never have both, so you always compromise on one or the other.

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Complex gear systems constantly break

Traditional multi-speed derailleurs have dozens of failure points — cables stretch, derailleurs bend, and shifting becomes unreliable after just months of real use.

E-bikes need more gear flexibility

Electric bikes produce massive torque. Single-speed setups waste that power, while complex gearing systems add weight and complexity your e-bike doesn't need.

The 2-speed crank
changes everything

Contavelo's internal 2-speed crank mechanism gives you the versatility you need without the complexity you hate.

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Power on every terrain

Switch between high gear for flat sprints and low gear for steep climbs — all without a derailleur. Your legs always work at peak efficiency.

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Bulletproof reliability

The internal mechanism is sealed from dirt, water, and damage. No cables to snap, no derailleur to bend. Just ride thousands of miles worry-free.

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Maximize your e-bike's power

Get the most out of your motor's torque in low gear, then shift to high for efficient cruising. Works with every standard e-bike drivetrain.

See how Easy Ride works

Back-pedal 45-90 degrees to shift — no cables, no derailleur, instant gear change.

Three steps to a better ride

Installation takes under an hour. Then enjoy two speeds for life.

1

Install

Fits any standard 68mm or 73mm bottom bracket shell. Remove your old crank, install Contavelo — no special tools required. Follow the included guide.

2

Shift

Simply back-pedal 45–90 degrees to shift gears. The internal clutch and ratchet mechanism engages instantly — even when the bike isn't moving. No cables, no electronics.

3

Ride

High gear gives you speed on flats and descents. Low gear gives you the torque for steep climbs. Two gears is all you need for 95% of riding.

Engineered to perfection

Every detail of the Contavelo crank is designed for maximum performance and longevity.

Internal 2-speed gearbox

Sealed planetary gear with clutch & ratchet mechanism inside the crank

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Back-pedal to shift

Simply back-pedal 45–90° to change gears — no cables, no electronics needed

Chain & belt drive compatible

Works with both traditional chain and modern belt drive systems

Only 0.7 kg (1.5 lb)

Aluminum alloy + heat-treated steel — ultralight for a full gear system

Shift while stopped

Unlike derailleurs, the Easy Ride shifts even when the bike isn't moving

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Built for folding bikes & e-bikes

Designed for small-wheel folding bikes, but also fits road and electric bikes

Works with your bike

Designed to fit the most common bike standards used worldwide — US and Europe.

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Regular Bikes

From city commuters to mountain bikes, Contavelo drops right in.

  • Road & gravel bikes
  • Mountain bikes (MTB)
  • City & commuter bikes
  • Single-speed fixies (conversion)
  • Kids & cargo bikes
100+
Units Shipped
$35K+
Raised on Kickstarter
4.9★
Average Rating
✓ Kickstarter Verified
★★★★★
"I was skeptical at first — how much difference can two gears really make? After my first real climb, I was sold. The shift is instant, the mechanism is totally silent, and my legs thank me every single morning commute."
— Marcus T., Berlin, Germany · Kickstarter Backer #47

Built to spec, built to last

Specification Value
Weight0.74 kg / 1.63 lb (crankset + gearbox)
Gear SystemInternal 2-speed planetary gear with clutch & ratchet
ShiftingBack-pedal 45–90° (no cables, no electronics)
Drive CompatibilityChain drive & belt drive
MaterialAluminum alloy + heat-treated steel
Target BikesSmall-wheel folding bikes, road, e-bikes
InstallationReplace existing crankset on Square Taper BB
Shifting While StoppedYes — shift even when not moving
Warranty1 year from purchase date

Reserve your Contavelo

Be the first to know when the 2-speed crank is available. Leave your email and we'll notify you.

RESERVE NOW
$350
Estimated availability: Q2 2026
  • Contavelo 2-speed crank assembly
  • Full installation guide (print + digital)
  • Bottom bracket adapters (68 & 73mm)
  • 1-year manufacturer warranty
  • Lifetime email tech support

No payment required. We'll email you when it's time to order.

Your questions, answered

Will Contavelo fit my specific bike? +

Contavelo fits any bike with a standard threaded bottom bracket shell — 68mm (road & most MTB) or 73mm (MTB). This covers the vast majority of bikes sold worldwide. If you're unsure, check your bike's spec sheet or email us — we'll confirm compatibility within 24 hours.

How hard is the installation? +

If you can remove a bike wheel, you can install Contavelo. The process takes 30–60 minutes and requires only a crank puller and a BB wrench — tools found at any bike shop. We include a detailed step-by-step guide. Our Kickstarter backers reported an average install time of 45 minutes.

Do I need to change my rear cassette? +

No. Contavelo works with your existing rear cassette and chain. The 2-speed mechanism is entirely at the crank — you can keep single-speed, 7-speed, 11-speed, or any other rear configuration. It just adds 2 speeds at the front without touching anything else.

How does it handle the extra torque from e-bike motors? +

The Contavelo is tested to handle up to 180Nm of torque — more than any production mid-drive motor produces. The CNC alloy construction and sealed planetary gear system are specifically engineered for e-bike use. Several Kickstarter backers use it daily on Bosch-powered cargo e-bikes.

What's the return policy? +

We offer a 30-day no-questions-asked return policy. If Contavelo doesn't work with your bike or you're not satisfied for any reason, contact us for a full refund. You cover return shipping. Our 1-year warranty covers all manufacturing defects — we'll replace any defective unit free of charge.

Born from a ride

It started on a climb in the Alps. Our founder, mid-ride, cursing at his single-speed bike that was perfect on the flats but useless on the ascent. He'd tried full-suspension drivetrains — too complex, too heavy, too many things to go wrong. There had to be a better way.

Two years of prototyping, machining, and real-world testing later, Contavelo was born. A simple, sealed 2-speed mechanism that lives entirely in the crank — no derailleur, no extra cables, no compromises. Just two gears, perfectly placed where you need them most.

After a successful Kickstarter campaign with 100+ backers across 12 countries, we're now scaling globally — bringing the 2-speed revolution to riders everywhere.

Contavelo Crank Built-in Transmission

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🔥 127 units sold — Limited production batch. Order before they're gone!
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