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
- Onderhoud
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Minoura
ISM seats
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O.Symetric
- ROAD
  - Compact
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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
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Synofit
Power Meters
Triathlon en reparatie standaards
TRP Tektro remsystems
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- 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
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    - Beach
  - O.Symetric
    - Road
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- Round chainrings
  - Road
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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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Brakes
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Care
Helmets
- Casco helmets
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Diverse
- Divers Wahoo Fitness
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- Food
- Wheels
  - Spareparts
- Saddle fastening
- Sale
- Divers
Best sellers

New products

Rotor T47 Bottom Bracket Internal Stainless Steel for 30mm Axle

€ 41,31
Tektro HD-M285 Brake Lever

Tektro HD-M285 Brake Lever Left = frontRight = back

€ 33,02
Rotor REX3.2 ATB Crankset Double + QX2 Oval Chainrings

Rotor REX3.2 ATB Crankset Double Rotor crankset REX3.2 ATB double. Top...

€ 318,18

All new products

Specials

iBike Newton+ Pro Tinkoff Edition powermeter

iBike Newton+ Pro Tinkoff Edition...

€ 330,30 € 784,30

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
€ 318,18 In stock
New Sale!

Rotor REX3.2 ATB Crankset Double + QX2...

Rotor REX3.2 ATB Crankset Double Rotor crankset REX3.2 ATB double. Top quality, superstiff yet super light. Aluminium crank and a steel shaft. Fits in a 24mm bearing. Choose your chainrings!

€ 318,18

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In stock
€ 165,25 In stock

Kinekt Suspension Stem

Kinekt suspension stem.For comfortable rides.

€ 165,25

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In stock
€ 866,94 In stock

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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In stock
€ 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
€ 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
€ 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
€ 41,28 In stock

Wahoo TICKR Bluetooth ANT+ Heart Rate Monitor

iPhone and Android Heart Rate Sensor

€ 41,28

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In 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
€ 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
€ 247,11 On stock

Kinekt Cirrus BodyFloat Kinekt 2.1...

THICKNESS 30.9MM Cycling with the BodyFloat seatpost is an experience in itself. An ingenious piece - the springy seat post technology, reinvented! Available in length of 350mm and 420mm

€ 247,11

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On stock
€ 268,55 In stock

Velocomp PowerPod V4 Power Meter (ANT+ and...

Why bother it when it is easy? The PowerPod V4, quick, easy and a cheap powermeter on the market! With 14 years of continuous improvement, there is the PowerPod V4 for you!

€ 268,55

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In stock
€ 619,01 In stock

ROTOR INpower DM Road Crankset Kit Powermeter

Rotor Power Pack Road INpower: Powermeter Bundle INpower DM Road with chainrings.

€ 619,01

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In stock
€ 70,21 In stock

Casco Roadster Olive Helmet

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
€ 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
€ 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

€ 41,31 In stock
New

Rotor T47 Bottom Bracket Internal...

€ 41,31

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In stock
€ 33,02 In stock
New

Tektro HD-M285 Brake Lever

Tektro HD-M285 Brake Lever Left = frontRight = back

€ 33,02

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In stock
€ 318,18 In stock
New Sale!

Rotor REX3.2 ATB Crankset Double + QX2...

Rotor REX3.2 ATB Crankset Double Rotor crankset REX3.2 ATB double. Top quality, superstiff yet super light. Aluminium crank and a steel shaft. Fits in a 24mm bearing. Choose your chainrings!

€ 318,18

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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
€ 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