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

Brands

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
- Onderhoud
- Mini Tools
- Ketting Cassette
- Inbus en Torx Schroevendraaiers
- Gereedschapsets
- Bracket-Cranks
- Kabel
Minoura
ISM seats
- City
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- Accessories
O.Symetric
- ROAD
  - Compact
  - Double
- ATB
- Time Trial/Triathlon
- BMX
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Powerpod
RedShift bikecomfort
ReSkin Sport
Rotor
- Cranksets
  - ROAD
  - ARENA/TRACK
  - ATB
- Powermeters
  - ROAD
  - ATB
- Q-Rings
  - MTB
  - ROAD
  - CYCLOCROSS
  - BEACH
- NO-Q
  - ROAD
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  - CYCLOCROSS
- Bearings and accessories
- QXL
Shift Up
Speedplay pedals
Smurt
Stryd
Synofit
Power Meters
Triathlon en reparatie standaards
TRP Tektro remsystems
- TRP/Tektro brakes
- TRP/Tektro brakelevers
- TRP/Tektro accessoires
- TRP/Tektro brakepads
Wahoo
- Bike Equipment
- Heart Rate Monitors
- Kickr
- accessories
- Informatie over Wahoo
Xplova
Sale
BSX insight
Chainrings
- Oval chainrings
  - Rotor
    - Road
    - MTB
    - Cyclocross
    - Beach
  - O.Symetric
    - Road
    - MTB
    - BMX
    - Cyclocross
- Round chainrings
  - Road
  - MTB
  - Cyclocross
  - 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
- Wahoo bikecomputers
- Xplova bikecomputers
- Other bike computers
- Spareparts
Brakes
- Calipers
- BRakelevers
- Accessoires/pads
Care
Helmets
- Casco helmets
- Accessoires
Diverse
- Divers Wahoo Fitness
- Bearing
- Tools
- Hometrainers
- Maintenance
- Spareparts Rotor
- Sportswear
- Food
- Wheels
  - Spareparts
- Saddle fastening
- Sale
- Divers
Best sellers

New products

Rotor T4724 External BB Steel

€ 41,31

All new products

Specials

Stryd Footpod Power Meter

€ 180,54 -5% € 190,04

All specials

€ 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
€ 574,38 In stock

Favero Assioma DUO Power Meter (2021)

The Favero Assioma Duo Power Meter. Power meter with sensors on both pedals. The best choice to take full advantage of the real dual-sided measurement.

€ 574,38

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In stock
€ 70,21 In stock

Casco Roadster helmet color: 'Olive'

Casco Roadster Olive, this urban bike helmet can be used versatile! The helmet has a comfortable fit and features an anti-insect net.Available with and without visor

€ 70,21

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In stock
€ 866,94 shipped in 1-3 days

Rotor MTB Powermeter 2INpower double sided...

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

€ 866,94

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shipped in 1-3 days
€ 165,25 In stock

Casco SPEEDairo 2 Helmet Blue Neon-Yellow

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
€ 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
€ 537,15 on stock

Rotor MTB and Road Powermeter INspider

Power meter bicycle from Rotor. The Rotor INspider. The power meter of the moment! Direct mount, Already have a ALDHU, Vegast or KAPIC? Just replace the spider for the INspider!

€ 537,15

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on stock
€ 194,17 On 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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On stock
€ 991,73 In stock

Wahoo KICKR V5.0 Power Trainer

The new bike trainer Wahoo KICKR V5.0! Are you planning to ride the Mont Ventoux or the Alpe d'Huez in your living room?

€ 991,73

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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
€ 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
€ 206,57 In 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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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
€ 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
€ 442,93 on stock

AeroPod+ powermeter CdA (Bluetooth & ANT+)

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

€ 442,93

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on stock
€ 165,25 In stock

Kinekt Suspension Stem

Kinekt suspension stem.For comfortable rides.

€ 165,25

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In stock

€ 41,31 In Stock
New

Rotor T4724 External BB Steel

€ 41,31

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In Stock

€ 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