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

Cart 0 (empty)

No products

To be determined Shipping

€ 0,00 Tax

€ 0,00 Total

Check out

Product successfully added to your shopping cart

Quantity

Total

There are 0 items in your cart. There is 1 item in your cart.

Total products

Total shipping To be determined

Tax € 0,00

Total

Continue shopping Proceed to checkout

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
- Trekkingbike
- Roadbike
- Triathlon
- MTB
- Accessories
O.Symetric
- ROAD
  - Compact
  - Double
- ATB
- Time Trial/Triathlon
- BMX
- Cranksets
Powerpod
RedShift bikecomfort
ReSkin Sport
Rotor
- Cranksets
  - ROAD
  - ARENA/TRACK
  - ATB
- Powermeters
  - ROAD
  - ATB
- Q-Rings
  - MTB
  - ROAD
  - CYCLOCROSS
  - BEACH
- NO-Q
  - ROAD
  - ATB
  - 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
- Selle Bassano
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
Bikes

New products

3D/3D24 DTT Steel Bolt set

€ 8,22
3d24 Spider Track 144x5 Black

- Spider: 144BCD - Spindle: 24mm steel - Q-Factor: 147 mm -...

€ 56,16
ROUND DM RING MTB BLACK R26T,28,30,32,34,36,38 and 40T

Introducing the new Round Direct Mount Chainrings MTB

€ 61,90
Seatpost ATB suspension Post Moderne 27.2 silver

Seatpost ATB suspension Post Moderne 27.2 silver

€ 21,45
Seatpost ATB suspension Post Moderne 27.2 silv. 2-bolt

Seatpost ATB suspension Post Moderne 27.2 silv. 2-bolt

€ 32,19
Seatpost candle model alu 27.2-350

seatpostModel: CandleDiameter: 27.2Length: 350mmSuitable for a saddle...

€ 5,74
Tektro M530 V-Brake, Silver + Brakepads and accessory

Complete Tektro V-Brake setModel: Tektro M530Color: SilverSuitable :...

€ 9,05
Tektro Auriga-Pro Lever Black/Silver Left

Tektro Auriga-pro HD-M700 Brakelever: Left Colour: Silver/Black Art...

€ 16,49
Tektro Caliper Auriga-Comp White

Tektro Auriga-Comp Caliper Art nr: 4901201 Colour: White Including:...

€ 28,88
Tektro Auriga-Pro Caliper Black

Tektro Caliper Auriga-Pro Colour: Black Artnr: 4902202

€ 33,02
Tektro Brake lever Silver For left/Right

Tektro Draco brake lever (DR1.1)Model: HD-M352/351Item: 4920011HSuitable...

€ 6,57
Tektro Auriga-Comp Lever Black/Silver

Tektro Auriga-Comp Lever Suiteble for left and right mounting Excl:...

€ 6,57
Tektro Auriga-Pro Lever Black/Silver

Tektro Auriga-Pro Brakelever Suitable for left and right mounting...

€ 6,57
Tektro Draco brakelever Right

Tektro Draco Brakelever HD-M350 Right Side Colour: Black Tektro...

€ 9,05
Tektro Auriga-Comp Brakelever Left/Right

Tektro Auriga-Comp Brakelever Can be used for left and right Colour:...

€ 16,49
Tektro Auriga Sub Caliper

Tektro Caliper Auriga Sub Colour: Black Art number: 4907202...

€ 33,02

All new products

Specials

Casco sun shield

Keep your eyes and head protected...

€ 11,12 -10% € 12,36

All specials

€ 495,00 In stock

Favero Assioma DUO-Shi Shimano Power Meter...

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

€ 495,00

Add to cart More

In stock
€ 247,93 In stock

Wahoo Fitness ELEMNT Bolt V2 Cycling Bike...

The Wahoo Fitness ELEMNT Bolt V2. The current most popular GPS cycling computer; automatic synchronization, easy-to-read color screen, Bluetooth and ANT+ connection, expanded app options and a long battery life.

€ 247,93

Add to cart More

In 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

Add to cart More

In stock
€ 60,00 In stock

Synofit Premium Dietary Supplements

€ 60,00

Add to cart More

In stock
€ 991,73 In stock

Wahoo KICKR Power 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

Add to cart More

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

Add to cart More

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%

Add to cart More

In stock
€ 329,75 In stock

Xplova NOZA ONE Semi-Smart Trainer

The best choice for an entry-level indoor bicycle trainer!

€ 329,75

Add to cart More

In stock
€ 66,90 € 74,34 -10% In stock

Casco Roadster helmet and visor color: Noir

Casco Roadster helmet and visor color: Noir

€ 66,90 € 74,34 -10%

Add to cart More

Reduced price!
In stock
€ 908,26 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

€ 908,26

Add to cart More

In stock
€ 41,28 In stock

Wahoo TICKR Bluetooth ANT+ Heart Rate Monitor

iPhone and Android Heart Rate Sensor

€ 41,28

Add to cart More

In stock
€ 3.552,89 In stock

TIME Alpe d’Huez 01 Disc Aktiv *Frame Only*

At under 900g, the Alpe d’Huez 01 is the lightest frame TIME has produced.

€ 3.552,89

Add to cart More

In stock
€ 165,25 In stock

Kinekt Suspension Stem

Kinekt suspension stem.For comfortable rides.

€ 165,25

Add to cart More

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

Add to cart More

In stock
€ 318,18 In stock
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

Add to cart More

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

Add to cart More

In stock
€ 3.222,31 In stock

TIME Alpe d’Huez 01 Disc *Frame Only*

At under 900g, the Alpe d’Huez 01 is the lightest frame TIME has produced.

€ 3.222,31

Add to cart More

In stock
€ 652,07 In stock

ROTOR INpower DM Road Crankset Kit Powermeter

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

€ 652,07

Add to cart More

In stock
€ 148,72 € 165,25 -10% 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.

€ 148,72 € 165,25 -10%

Add to cart More

Reduced price!
In stock
€ 990,91 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

€ 990,91

Add to cart More

In stock

€ 8,22 On Stock
New

3D/3D24 DTT Steel Bolt set

€ 8,22

Add to cart More

On Stock
€ 56,16 On Stock
New

3d24 Spider Track 144x5 Black

- Spider: 144BCD - Spindle: 24mm steel - Q-Factor: 147 mm - Chainline: 43.5mm - Material: 100% CNC-machined, 7075-T6 aluminum alloy

€ 56,16

Add to cart More

On Stock
€ 61,90 On Stock
New

ROUND DM RING MTB BLACK...

Introducing the new Round Direct Mount Chainrings MTB

€ 61,90

Add to cart More

On Stock
€ 21,45 On Stock
New

Seatpost ATB suspension Post Moderne 27.2...

Seatpost ATB suspension Post Moderne 27.2 silver

€ 21,45

Add to cart More

On Stock
€ 32,19 On Stock
New

Seatpost ATB suspension Post Moderne 27.2...

Seatpost ATB suspension Post Moderne 27.2 silv. 2-bolt

€ 32,19

Add to cart More

On Stock
€ 5,74 On Stock
New

Seatpost candle model alu 27.2-350

seatpostModel: CandleDiameter: 27.2Length: 350mmSuitable for a saddle strapMaterial: Aluminum

€ 5,74

Add to cart More

On Stock
€ 9,05 In stock last models special price
New

Tektro M530 V-Brake, Silver + Brakepads...

Complete Tektro V-Brake setModel: Tektro M530Color: SilverSuitable : Front brake and Rear brake

€ 9,05

Add to cart More

In stock last models special price
€ 16,49 In stock last models special price
New Sale!

Tektro Auriga-Pro Lever Black/Silver Left

Tektro Auriga-pro HD-M700 Brakelever: Left Colour: Silver/Black Art nr:4902011L

€ 16,49

Add to cart More

In stock last models special price
€ 28,88 In stock last models special price
New

Tektro Caliper Auriga-Comp White

Tektro Auriga-Comp Caliper Art nr: 4901201 Colour: White Including: Hydraulic connectionkit

€ 28,88

Add to cart More

In stock last models special price
€ 33,02 In stock last models special price
New

Tektro Auriga-Pro Caliper Black

Tektro Caliper Auriga-Pro Colour: Black Artnr: 4902202

€ 33,02

Add to cart More

In stock last models special price
€ 6,57 In stock last models special price
New

Tektro Brake lever Silver For left/Right

Tektro Draco brake lever (DR1.1)Model: HD-M352/351Item: 4920011HSuitable for left and rightColor: Silver

€ 6,57

Add to cart More

In stock last models special price
€ 6,57 In stock last models special price
New

Tektro Auriga-Comp Lever Black/Silver

Tektro Auriga-Comp Lever Suiteble for left and right mounting Excl: Bracket Colour: Black/Silver

€ 6,57

Add to cart More

In stock last models special price
€ 6,57 In stock last models special price
New

Tektro Auriga-Pro Lever Black/Silver

Tektro Auriga-Pro Brakelever Suitable for left and right mounting Excl: Bracket Colour: Black and Silver

€ 6,57

Add to cart More

In stock last models special price
€ 9,05 In stock last models special price
New Sale!

Tektro Draco brakelever Right

Tektro Draco Brakelever HD-M350 Right Side Colour: Black Tektro Part Number: IR10214B22B13

€ 9,05

Add to cart More

In stock last models special price
€ 16,49 In stock last models special price
New Sale!

Tektro Auriga-Comp Brakelever Left/Right

Tektro Auriga-Comp Brakelever Can be used for left and right Colour: black/White Art nr: 4901001

€ 16,49

Add to cart More

In stock last models special price
€ 33,02 On Stock
New

Tektro Auriga Sub Caliper

Tektro Caliper Auriga Sub Colour: Black Art number: 4907202 Including: Banjo Connection

€ 33,02

Add to cart More

On Stock

€ 910,88 € 1.114,88 shipped 1 a 2 days
New Sale!

2InPower Track 175mm exclusief Blad

Track and Fixie Powermeter Spider: RotoR 144x5 excl chainring Battery Specications: Rechargeable Li-ion + USB cable Estimated Battery life: 250 hours Strain Gauges: 4 Pairs Wireless Technology: ANT+ 2.4Ghz/ Bluetooth Smart Analisys software: Trainingspeaks.com/RotoR

€ 910,88 € 1.114,88

Add to cart More

shipped 1 a 2 days
€ 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%

Add to cart More

In stock
€ 237,98 € 264,42 -10% In stock

Casco SPEEDairo 2 RS blue neon-yellow...

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

€ 237,98 € 264,42 -10%

Add to cart More

Reduced price!
In stock
€ 237,98 € 264,42 -10% In stock

Casco SPEEDairo 2 RS black with airfit

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

€ 237,98 € 264,42 -10%

Add to cart More

Reduced price!
In stock
€ 237,98 € 264,42 -10% Shipped in 2 weeks

Casco SPEEDairo 2 RS Helmet White With Airfit

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

€ 237,98 € 264,42 -10%

Add to cart More

Reduced price!
Shipped in 2 weeks
€ 223,10 € 247,89 -10% on order

Casco MTBE Carbon full face

Casco MTBE carbon full face helmet MTB blackAirfit ✅ Stylish✅Nice visor included✅Best choice ✅ #SafetyFirst #GoStylish

€ 223,10 € 247,89 -10%

Add to cart More

Reduced price!
on order
€ 195,62 € 217,36 -10% No longer available
Sale!

Casco SPEEDairo RS (silver(antra)- black)

The best helmet in the Speed series Bike helmet with visor Casco SPEEDairo silver - black A great aerodynamic bike helmet with visor, the helmet complies with the EN 1078 safety standard.

€ 195,62 € 217,36 -10%

Add to cart More

No longer available
€ 180,54 € 190,04 -5% Out of stock

Stryd Footpod Power Meter

€ 180,54 € 190,04 -5%

Add to cart More

Reduced price!
Out of stock
€ 178,48 € 198,31 -10% Out of stock
Sale!

Casco SPEEDairo RS pink

The best helmet in the Speed series Bike helmet with visor Casco SPEEDairo black-red A great aerodynamic bike helmet with visor, the helmet complies with the EN 1078 safety standard.

€ 178,48 € 198,31 -10%

Add to cart More

Out of stock
€ 148,72 € 165,25 -10% 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.

€ 148,72 € 165,25 -10%

Add to cart More

Reduced price!
In stock
€ 148,72 € 165,25 -10% 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.

€ 148,72 € 165,25 -10%

Add to cart More

Reduced price!
In stock
€ 148,72 € 165,25 -10% In stock

Casco SPEEDairo 2 Helmet White

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

€ 148,72 € 165,25 -10%

Add to cart More

Reduced price!
In stock
€ 122,69 € 136,32 -10% on stock

Casco Roadster Plus helmet electric bike...

Casco Roadster plus helmet Marine BlueLeather straps✅ Stylish✅Nice visor included✅ #SafetyFirst #GoStylish

€ 122,69 € 136,32 -10%

Add to cart More

Reduced price!
on stock
€ 122,69 € 136,32 -10% on stock

Casco Roadster Plus helmet electric bike...

Casco Roadster plus helmet shiny white. Leather straps✅ Stylish✅Nice visor included✅ #SafetyFirst #GoStylish

€ 122,69 € 136,32 -10%

Add to cart More

Reduced price!
on stock
€ 119,79 € 239,59 -50% 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!

€ 119,79 € 239,59 -50%

Add to cart More

In stock
€ 118,97 € 132,19 -10% on stock

Casco E.Motion 2 helmet electric bike...

Casco E.Motion 2 helmet blackAirfit ✅ Stylish ✅Safe ✅ #SafetyFirst #GoStylish

€ 118,97 € 132,19 -10%

Add to cart More

Reduced price!
on stock
€ 118,97 € 132,19 -10% on stock

Casco E.Motion 2 helmet electric bike...

Casco E.Motion 2 helmet navy casual mattAirfit ✅ Stylish ✅Safe ✅ #SafetyFirst #GoStylish

€ 118,97 € 132,19 -10%

Add to cart More

Reduced price!
on stock
€ 118,97 € 132,19 -10% on stock

Casco MTBE 2 helmet MTB Colour: black matt

Casco MTBE 2 helmet MTB black mattAirfit ✅ Stylish✅Nice visor included✅Best choice ✅ #SafetyFirst #GoStylish

€ 118,97 € 132,19 -10%

Add to cart More

Reduced price!
on stock
€ 96,57 € 206,57 On Stock
New Sale!

Trp Parabox kit

TRP Parabox Complete Box- including2 Brake discs 160mm 6 bolts-bleed kit

€ 96,57 € 206,57

Add to cart More

On Stock
€ 0,00 € 784,30 In stock
Sale!

iBike Newton+ Pro Tinkoff Edition powermeter

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

€ 0,00 € 784,30

Add to cart More

In stock