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Description

VINTAGE STYLE MODERN PERFORMANCE

The Oosten blends timeless Dutch design with modern cycling technology for a stylish and efficient ride. Its lightweight 6061 aluminum frame makes climbing and long rides easier, while the rust-resistant build ensures lasting reliability. Unlike heavy steel vintage bikes that flex and wear out quickly, the Oosten stays stiff, durable, and practical for everyday riding, offering the perfect mix of style and performance.

EVERYDAY COMMUTING

Every detail of the Oosten is made for rider comfort and ease of use. The Selle Royal Ondina saddle, swept-back handlebars, and relaxed geometry create an upright, comfortable riding position, perfect for city cruising. Full-length mudguards and a chain guard keep you clean and dry, while lightweight alloy components reduce weight for effortless handling. The 700c wheels roll smoothly over roads, offering a stable and efficient ride for any journey.

SMOOTH & EFFICIENT RIDING

The Shimano 8-speed drivetrain, paired with a responsive Shimano Altus derailleur, makes shifting smooth and intuitive, helping you navigate city streets and inclines with ease. Alloy V-brakes provide precise stopping power, giving you better control and confidence even on steep descents. The double-wall alloy rims and stainless steel spokes enhance durability while ensuring a lightweight, stable ride—perfect for both casual cruising and daily commuting.

ATTENTION TO DETAIL

More than just a stylish cruiser, the Oosten is designed with practicality in mind. The rear rack and front basket provide storage for daily essentials, while the alloy kickstand, alloy hubs, and stainless steel spokes enhance long-term durability. Every component is carefully chosen to reduce weight without sacrificing strength, creating a city bike that is beautiful, comfortable, and built to last.

Components

FRAMESET
FRAME
AL6 City Frame, Cruiser Specific Geometry, 6061 Alloy
HEADSET
External Cup Threaded, S.H.I.S. EC 34/28.6 | 34/30
SUSPENSION
FORK
Hi-Ten Rigid Fork - Cruiser/Trekking Specific, Straight 1-1/8" Threaded
DRIVETRAIN
REAR DERAILLEUR
Shimano Altus RD-M310 8-Speed
SHIFTER
Shimano SL-RS45-8R Revoshift 8-Speed
CRANK
Steel 36T, 165mm (S/M), 170mm (M/L)
CHAINRING
36T Steel
CASSETTE
Shimano Altus CS-HG31, 8-Speed 11-32T
CHAIN
KMC Z-8.3 8-Speed
BRAKES
FRONT BRAKE
Alloy V-Brake
REAR BRAKE
Alloy V-Brake
WHEELS
REAR HUB
Formula Alloy 36H
RIM
Double Wall Alloy
TYRE
DELI 26 x 1-3/8" / 700 x 35C
INNER TUBE
Auto Valve (Schrader)
CONTACT POINTS
HANDLEBAR
Polygon Alloy, Width: 620mm (S/M), 640mm (M/L), Rise: 112mm, Swept: 50 Degree, 25.4mm
SADDLE
Selle Royal Ondina
SEATPOST
Polygon Alloy, 27.2x250mm, 15mm Offset
STEM
Polygon Alloy, Length: 80mm, Quill: 180mm, Bar: 25.4mm, Rise: 30 Degree
PEDALS
Nylon Platform
WEIGHT
BIKE WEIGHT
31.31 lbs (700c)
ACCESSORIES
KICK STAND
Alloy
FENDER MUDGUARD
Alloy Front & Back

Extras

  • Basket with Handlebar Strap (plastic material)
  • Rear Rack: 55.12 lbs weight limit

Geometry

  S/M M/L
RIDER HEIGHT 5'1" - 5'7" 5'6" - 5'11"
(A) Stack 536 550
(B) Reach 364 379
(C) Head Tube Angle 69° 69°
(D) Head Tube Length 140 155
(E) Seat Tube Angle 70° 70°
Seat Tube Angle Effective 70° 70°
(F) Seat Tube Length 406 445
(G) Top Tube Effective 560 580
(H) Bottom Bracket Height 298 298
(I) Bottom Bracket Offset 37 37
(J) Chainstay 448 448
(K) Wheel Base 1051 1071
(L) Standover Height 472 476

* All lengths in mm

Customer Reviews
4.3 Based on 62 Reviews
5 ★
61% 
38
4 ★
23% 
14
3 ★
8% 
5
2 ★
3% 
2
1 ★
5% 
3
Customer Photos
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Filter Reviews:
WY
17 Jan 2024
Wendy Y.
australia australia

Great!

First bike! Super cute and comfortable ride. Assembly instructions were quite generic, but figured it out with the help of the videos on the purchase page. It was packaged very well with all the tools required to assemble (except the pump). A breeze to ride, and the 8 gears helps tackle some challenging hills... I've been riding it every day and it's so much fun!

BikesOnline US Polygon Sierra Oosten - Cruiser Bike Review
LE
02 Jan 2023
Lauren E.
australia australia

Haven't received it yet

Ordered over a month ago and haven't even had tracking details sent yet.

CS
06 Oct 2022
Cassandra S.
australia australia

Super happy

After using my brothers old mountain bike for a year to get to and fro the 5km to work I finally decided to pursue my own course and buy the style of bicycle I've always wanted since I was a little girl. I would like to add that I have always had my brothers hand me downs..... And that I am a 30yo woman. Not only was the bike I purchased far more beautiful then I had enticipated, with the beautiful leather seat and grips, but there was a mix up with my purchase of the demo model and the company sent me a new one with no extra cost. Super easy to ride on my way to work that has a few dips and inclines and just enough give for me to feel the workout without trying too hard. Fun note! My usual parking spot at work had me lifting my bike up to get it out of the shed. The new bicycle was damn near thrown into the roof the first time I lifted it because it is so light and handy to manage. My only issue is that my local swooping magpie still hates me regardless of how awesome my new bike is.

BG
22 Jan 2022
Beau G.
US US

Perfect thank you

Arrived in excellent shape, high quality bike. Thank you.