Rosiir | The webshops for all bike saddles, powermeters, chainrings and other cycling needs!

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4iiii
- 4iiii Precision Powermeter
- 4iiii Smarttrainers
Casco bike helmets
- Casco helmet electric bike
Cirrus Cycle Kinekt Bodyfloat supsension comfort bike gear
Cycling Ceramic
EasySeat
Essax Duopower saddles
Favero Assioma
Fietsgereedschap
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Minoura
ISM seats
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O.Symetric
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ReSkin Sport
Rotor
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  - ROAD
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- Bearings and accessories
- QXL
Shift Up
Speedplay pedals
Smurt
Stryd
Synofit
Power Meters
Triathlon en reparatie standaards
TRP Tektro remsystems
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- TRP/Tektro brakepads
Wahoo
- Bike Equipment
- Heart Rate Monitors
- Kickr
- accessories
- Informatie over Wahoo
Xplova
Sale
BSX insight
Chainrings
- Oval chainrings
  - Rotor
    - Road
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    - Beach
  - O.Symetric
    - Road
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    - Cyclocross
- Round chainrings
  - Road
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  - Track
Cranks
- Rotor race/triathlon
  - Compact
  - Double
- Rotor MTB
  - Singlespeed
  - Double
- Powermeter
  - Road/triathlon
  - MTB
- Crank spareparts
- O.Symetric
Bikeseats
- ISM seats
  - Citybike
  - Trekkingbike
  - Roadbike
  - Triathlon
  - MTB
- Essax Duopower
- Easyseat
- Seatposts and more
- Other saddles
Powermeters
- Avio powermeters
- 4iiii powermeters
- Favero Assioma Powermeters
- Powerpod powermeter
- Rotor powermeters
- Stryd powermeter running
- Spareparts powermeters
Navigation
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- Spareparts
Brakes
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Care
Helmets
- Casco helmets
- Accessoires
Diverse
- Divers Wahoo Fitness
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- Spareparts Rotor
- Sportswear
- Food
- Wheels
  - Spareparts
- Saddle fastening
- Sale
- Divers
Best sellers

New products

All new products

Specials

iBike Newton+ Pro Tinkoff Edition powermeter

iBike Newton+ Pro Tinkoff Edition...

€ 330,30 € 784,30

All specials

€ 194,17 In stock

Redshift ShockStop Suspension Seatpost...

Cycling with the BodyFloat seatpost is an experience in itself. An ingenious piece - the springy seat post technology, reinvented!

€ 194,17

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In stock
€ 367,77 In stock

Favero Assioma UNO Power Meter (2021)

Assioma UNO Cycling power meter with power sensor on the left pedal. The single-sidedpower meter pedals with upgrade option.

€ 367,77

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In stock
€ 289,25 Out of stock

Wahoo Fitness ELEMNT ROAM Bike Computer

The Wahoo ELEMNT ROAM is the new bike computer 4.0! It has ANT+ and bluetooth 4.0. Connect with every BTE and ANT+ device and you'll have your info on a nice full-colour 2.7" GorillaGlass screen

€ 289,25

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Out of stock
€ 70,21 In stock

Casco Roadster helmet and visor color: Noir

Casco Roadster helmet and visor color: Noir

€ 70,21

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In stock
€ 660,33 In stock

Wahoo KICKR Core Smart Trainer

The new bike trainer Wahoo KICKR Core! As much Wahoo KICKR as possible for the lowest price possible: The Wahoo KICKR Core!

€ 660,33

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In stock
€ 140,45 In stock

RedShift ShockStop suspension stem

The patent-pending ShockStop Suspension Stem smooths out road imperfections, reducing fatigue and strain. Whether you're on a local group ride, or exploring gravel back roads, the ShockStop will make your ride smoother, faster, and more comfortable. The minimal, subtle design blends seamlessly with the aesthetic of modern road bikes.

€ 140,45

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In stock
€ 321,49 In stock

Rotor ALDHU Carbon crank arms

Rotor invented a new system: Rotor ALDHU Carbon in wich you can compose your own crank.Durable, superlight en beautifull.Compose you own crank from 165 mm up to 175 mm.

€ 321,49

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In stock
€ 206,57 Out of stock

PowerPod Lite V3 powermeter (ANT+)

Why bother it when it is easy? The PowerPod Lite, quick, easy and a cheap powermeter on the market! With 12 years of continuous improvement, there is the PowerPod V3 for you!

€ 206,57

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Out of stock
€ 412,40 In stock

Wahoo Fitness KICKR Snap Power Trainer

The best wheel-on design trainer in the world. Wahoo succeeded in bringing the real road-feeling to you attic or basement. Combined with a perfect powerindication you're going to buy your best product off this years.

€ 412,40

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In stock
€ 185,95 In stock

ISM PN4.1 Road Gravel Race Saddle

NEW for 2021! The ISM PN4.1 is the newest offering in the Performance Narrow category of saddles. Same shape as the popular PN4.0, only with increased padding for those looking to soften their ride.

€ 185,95

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In stock
€ 165,25 In stock

Casco SPEEDairo 2 Helmet Black

The new Casco Speedairo2 A great aerodynamic bike helmet, the helmet complies with the EN 1078 safety standard.

€ 165,25

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In stock
€ 253,91 € 329,75 -23% In stock
Sale!

Xplova X5 Evo GPS Bike Bomputer with...

A revolutionary GPS Cycle computer with integrated action camera! Explore, Record, Share! X5 Evo — A new way of recording andsharing your cycling experiences

€ 253,91 € 329,75 -23%

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In stock
€ 190,07 In stock

Wahoo KICKR Headwind smartfan

The Wahoo Headwind, worlds first smartfan ever! Controlled by speed, hartrate the Wahoo Headwind give the most comfort while riding your indoor-work-out

€ 190,07

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In stock
€ 314,04 In stock

Wahoo ELEMNT RIVAL GPS Watch Stealth Grey

Introducing... the new Wahoo ELEMNT RIVAL Watch that offers you a seamless performance advantage!

€ 314,04

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In stock
€ 165,25 On stock

Rotor spiderring Q-ring DM directmount

This spiderring Q-ring is suitable for the new directmount system from Rotor (ALDHU, VEGAST 92)INpower etc.) From one unit, so super light and super stiff!

€ 165,25

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On stock
€ 949,59 In stock

Rotor Powermeter 2INpower double sided...

Power meter bicycle from Rotor. The Rotor 2INpower. The power meter of the moment!Direct mount, so opt for loose spider with blades or spider ring. Singlespped or double. Q or NoQ

€ 949,59

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In stock

No new products at this time.

€ 330,30 € 784,30 In stock
Sale!

iBike Newton+ Pro Tinkoff Edition powermeter

iBike Newton+ Pro Tinkoff Edition powermeter.Last one. Special offer.

€ 330,30 € 784,30

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In stock
€ 253,91 € 329,75 -23% In stock
Sale!

Xplova X5 Evo GPS Bike Bomputer with...

A revolutionary GPS Cycle computer with integrated action camera! Explore, Record, Share! X5 Evo — A new way of recording andsharing your cycling experiences

€ 253,91 € 329,75 -23%

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In stock
€ 180,54 € 190,04 -5% In stock
Sale!

Stryd Footpod Power Meter

€ 180,54 € 190,04 -5%

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In stock
€ 156,99 € 165,25 -5% In stock
Sale!

TRP EuroX carbon caliper brake cyclocross

TRP EuroX carbon cantilever caliper cyclocross rear&front Super lightweight and super stiff with red accents!Weight 109 grams per wheel. The best you can get!

€ 156,99 € 165,25 -5%

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In stock