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Polygon Sierra Oosten


Ships within Australia
Buy online only


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"Oosten" is Dutch for "East" and hence represents the perfect blend of vintage Dutch styling combined with the latest cycling technologies from Asia. Designed from the ground up by Bicycles Online Australia, where we realised that women want and deserve both style and performance from their bike.

Enormous thought went into every detail on the bike. The result is a classic vintage bike that encapsulates modern technology combined with old daysÍ charisma - get ready to reset what you believed a ladies vintage bike can do.

There are cheaper vintage bikes out there, there are however few better quality than the Oosten. Cheap vintage bikes are designed to last for few months before they rust, gear shifts become vague and the weight of the bike means they are simply not used any more.

When used as a commuter in all conditions and terrain, we wanted the bike to be able to still perform and hence weight became a primary concern. Where possible, alloy components are chosen - such as the frame, bars and seat post, but it is also the small details like the mud guards and brakes that result in a super light weight ladies bike.

Typical steel framed vintage bikes are both heavy and tend to flex under pressure. This is where the Oosten excels and features a 6061 Aluminium frame, resulting in a much lighter and stiffer frame. This all becomes clear when youÍre faced with a steep uphill and the only way up is to stand and pedal. Where steel frame bikes flex and wobble, the Polygon Sierra Oosten keeps its composure, thus resulting in less effort spent and better ride quality.

There have been no compromises in the drive train either - rather than a 6 or 7 speed freewheel, which is a very old and difficult to service system, the Polygon Sierra Oosten features a 8 speed freehub, not only does it provide more than 30% more additional gear range but it also is much easier to service. These gears are all selected using a high quality Shimano Altus derailleur offering dependable and effortless gear shifting performance.

Confidence whilst braking has been assured with the Oosten. The latest alloy "V brakes" are used, rather than typical cantilever style. These linear pull brakes of the Oosten, offer increased power and modulation and won't flex and grab during steep descents.

Perhaps the feature that goes inconspicuous the most in the Oosten are the wheels. Alloy double wall rims, stainless steel spokes and Alloy hubs all help in keeping the bike light but itÍs the wheel size on this bike that will make the biggest difference compared to other bikes in the market. Boosting an elegant 700c set of wheels, these roll superbly on roads and bike lanes, with the added comfort almost trumping its speed.

Rounding off the bike, the rear rack, wicker basket and comfort riveted saddle ensures the bike has oodels of style and is the perfect modern take on a classic vintage bike.

KEY FEATURES: Super Light 6061 Alluminium Frame Shimano Altus 8 Speeds 700c Double Wall rims and Alloy hubs Alloy V-Brakes Wicker front basket Convenient rear rack Step Through frame, ideal to get in and out even when you're wearing a skirt Comfortable leather saddle and grips Alloy handlebars, stem, seatpost, mudguards and kickstand Colour option: Baby Blue or Black Weight = 14kg LIFETIME warranty on frame Full manufacturerÍs warranty on parts

Brand: Polygon
Type: Cruiser Bikes
Gender: Unisex
Gearing: 8-speed
Item condition: New
Availability: Buy online
ID: 104218203

Store info

We are an Australian owned, specialty retailer of road bikes, mountain bikes, parts, accessories, and clothing. We deliver the personalized service of the best local shops, but with a dynamic, interactive experience only possible on the web — specially designed to make you knowledgeable and confident about every product we sell.

You may have noticed that our prices are some of the most competitive in the industry. Why? Because as an independent Australian retailer, we are able to go straight to the manufacturers and bypass the agents, importers, wholesalers and distributors that are usually part of the retail process. By cutting out these expensive middlemen, we can pass the savings on to you, where they belong.

When you order a bike from Bicycles Online, you can be assured our staff will treat your bike as their own. Our team approaches builds with care and precision following a detailed Pro Build process developed over years of refinement. We combine our years of experience with your specific needs in order to deliver a bike that will shift crisply, brake solidly, stay in adjustment, and provide years of awesome riding.

Questions? Please don’t hesitate to contact us. We hope to become your resource as you shop for a new pro-quality bike, or any of the parts, clothing, or accessories that you need.

Shipping policy

Exchange, Returns, and Refunds Policy

Please choose carefully before you buy.

For faulty products, offer a 14 DAY REPLACEMENT WARRANTY, from the date you receive your product. They do not offer a satisfaction guarantee on any of their products, however due to their high level of customer service, they will always endeavour to keep customers happy and satisfied.

If your product is faulty, it will be replaced with an identical product. If they cannot replace the product, they will offer you the option of choosing another product of the same value, or provide you with a refund for the total value of the faulty product.

Please note: Standard postage fees apply to all return orders. Where the return relates to a faulty item, the replacement product will be sent out to you, at no charge, within 5 working days from the date we receive the faulty product.

When returning your product, please make sure you provide the following details:

  • Your full name
  • Your order number
  • Reason why you are returning the product
  • Your instructions informing us how you would like the issue resolved.

Please include the original order confirmation or invoice you received with your product. Also, if you haven't previously provided a contact phone number, please include this with your return. This will ensure the issue is resolved quickly, should anyone need to contact you.

Polygon Sierra Oosten


Ships within Australia
Buy online only


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