2018 Marin B-17 3 27.5+ Dual Suspension Mountain Bike

WAS $4,799.00 You Save $1,500.00

Final clearance. Very limited stock. Size Large available only

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The B-17 is Marin's all conquering, all-terrain shred sled.

The Series 3 aluminium frame runs the latest spec 27.5 plus sized wheels and larger volume tyres that just keep on gripping, even when you think they’ll blow out. The outer diameter of the 27.5 plus tyres are similar to a regular 29er so you still get the rolling efficiency whilst enjoying all the grippy benefits of the plus sized tyre. Quite simply, they are the instant traction upgrade and confidence booster you never knew existed.

With the larger tyres, there is a lot more forgiveness to the B17, than the 130mm of travel might indicate. With the boost hub spacing together with thru axles front and rear you’ll be hitting berms and jumps with more conviction than ever.

The spec list reads like the whos who of the bike industry, selectively utilising each brands core competency.

Up front there is the class leading  RockShox Pike suspension fork with 130mm of travel and a RockShox supplied Super Deluxe RCT3 Debonair rear shock for plenty of progressive damping on the big hits – and with this bike you will be taking them too.  

For the drivetrain SRAM provide the massive 1 by 12 GX Eagle drivetrain for all the gear range you could ever want.

The latest Shimano Deore M6000 hydraulic disc brakes continue to redefine the brands ability to build the best stoppers around. Pulling on a 180mm front rotor, you can trust they’ll pull you up smoothly every time you hit the anchors.

Lastly the integrated dropper post, allows you to adjust your ride according to the trail conditions, to ensure maximum efficiency and maximum froth. 


Key Features:

  • Lightweight and durable Series 3 6061 aluminium frame is nimble and tough
  • RockShox Pike suspension fork has 130mm of travel for rough descents
  • RockShox Super Deluxe RCT3 Debonair rear suspension completes the full-suspension package
  • 12-speed SRAM GX Eagle drivetrain shifts smoothly on any terrain
  • Shimano Deore hydraulic disc brakes for excellent stopping power in any weather condition
  • Grippy and wide 27x2.8" WTB Ranger tyres are perfect for shredding and are tubeless compatible
  • Compatible with 29" tyres
  • Also includes a TranzX Bolt-on Thru-Axle
  • Weight 14.5kg (without pedals)


Industry Reviews:

Rotorburn Product Review - Marin B17 3

Marin B-17 3 - Test Ride Review - Dirt Rag

Marin B-17 3 - Test Ride Review - Singletracks



Your bike will arrive in a custom Bicycles Online bike guard box as described in the below video.


Marin B-17 3


Series 3 6061 Aluminum Frame, 27.5+” Wheels, 120mm Travel MultiTrac Suspension Platform, Seatstay Mounted Post Mount Disc Brake, 148x12mm Boost Thru-Axle **Compatible w/ 29"


RockShox Pike RC 27.5+, 130mm Travel, Compression and Rebound Adjustment, Solo Air Spring, 110x15mm Boost Spacing, Maxle Stealth, 51mm Offset 


RockShox Super Deluxe RCT3 Debonair, 210x50mm, Deboniar Air Sleeve, Compression and Rebound Adjustment, Custom Tune, Firm Pedal Platform Lever, 25mm x M8 Hardware


Deity Skyline, 787mm Width, 25mm Rise, Custom Graphics


Deity Copperhead Stem, 50mm


FSA No 57E, Sealed Cartridge Bearings, 1 1/8" x 1 1/2”


WTB Volt Comp


KS LEV Dropper Post, Southpaw Lever, Size S 100mm Travel, All Other Sizes: 125mm Travel


SRAM Descendant 6K Aluminum, Direct Mount 12-Speed 34T, Boost Spacing


External Sealed Cartridge Bearings


SRAM XG-1275 12-Speed, 10-50T




SRAM GX Eagle 12-Speed


SRAM GX Eagle 1x12-Speed


Shimano Deore M6000 Hydraulic, Front 180mm rotor, Rear 160mm rotor


WTB Ranger 27.5x2.8 Tough/Fast, TCS, Tubeless Ready 


Stan's NoTubes Major S1, 38mm Inner, Sleeved Joint, BST Technology, Tubeless Compatible


Stainless Steel Spokes


Formula, 110x15mm (F) 148x12mm, Quad Sealed (R) , Centerlock Disc, 32H


Yes (some regional and  remote postcodes excluded)

Size Chart




RIDER HEIGHT 160-167cm 167-178cm 178-188cm 188-193cm


Note: If you are in between sizes, measure your wingspan. If it is greater than your height, go for the frame size up. If your height is greater than your wingspan, go for a frame size down.



We understand how important shipping is once you click "buy now", that's why we have the following policies

Australian Warehouse

All products are in stock and ready to ship from our Sydney warehouse (with the exception of preordered bikes, which have the dispatch date illustrated)

Next day dispatch

All orders received by 5 pm AEST will usually be dispatched the following business day. If an order is placed on the weekend or public holiday, please note dispatch will usually be the next working day. For tracked shipments, please allow 12 hours for tracking to begin.

Shipping of Parts, Accessories and Apparel

Economy Shipping

There is free delivery available on all small parcels Australia wide using tracked services of Australia Post or Fastway, no minimum order value required! Estimated delivery time is 4-9 business days. 

Express Shipping

We do also offer Express Shipping for a small additional fee on parts, accessories and apparel orders. Estimated delivery time on Express Shipping is 1 to 4 business days.

Shipping of Bikes

Shipping of bikes and other bulky goods is free to 85% of residences in Australia. However, some postcodes incur a surcharge starting from $29. 

Once shipped you will be issued a consignment number which can be used to track your parcel. We use Direct Freight Express for deliveries and you can track your delivery by calling 1300 347 397 or online at www.directfreight.com.au


We’re so confident that you’ll love our extensive range of bikes, that we’ll let you ride one as your own for a full 14 days and if you don’t like it, simply e-mail us at sales@bicyclesonline.com.au and we’ll pick it up from you, free of charge! Just make sure you keep the box so it can be re-used to send it back. Click here for more information. 

All of our bicycles come with a Free Pro Build valued at $99. This means that your bicycle will be pre built by our professional mechanics. For your convenience, safety and comfort all our bikes are fully assembled prior to delivery. The bike is then packaged back into a box for secure shipment.


When your bike arrives, all you have to attach is the front wheel, the handlebar and pedals, everything else has been done – the headset has been adjusted, wheels trued, pedals and seat post greased, brakes and gears calibrated, and the tyres have been pumped up (please note upon arrival, in some cases you may need to add more air to tyres).

Most companies simply sell you the bike as it comes from the factory, which will require significant know-how to get your bike on the road. Currently we are the only Australian company providing this service, and have the 14 day test ride to back it up.

All the tools required to assemble the bike are included. 

Please note, that all bicycles whether purchased online or instore, are mechanical devices and need to be serviced regularly to ensure proper functioning. New gear and brake cables, will stretch during the initial bed-in period, and will need to be adjusted after approximately 150-300km. 

Whilst your new bicycle will have already gone through our Pro Build process, you will still need to complete some minor final assembly steps when you take your bicycle out of its box.

Please follow the video playlist below to correctly complete the setup of your new bike:


Assembly Time:

  • 10-15min - You have assembled bikes before
  • 15-25min - You are mechanically handy
  • 30-40min - Never assembled a bike and working with tools isn't your thing


Unboxing your bike:

Start by carefully opening the top flap to expose the contents. You will see the bike with plenty of protective packaging and next to the rear wheel, the saddle & seatpost, a small cardboard box where your pedals, tools, bell and reflectors are. If you ordered any other products with the bike, it is likely they were placed on the bottom of the box as well. Remove all the loose items before pulling the bike out of the box and gently placing it on the floor.

Keep the box and all the protective packaging found on the bike in case you choose to change frame sizes, upgrade/downgrade the bike, or return the bike for a full refund under the 14 Day Test Ride Policy.


How to install a thru axle:


Disc Brake Setup:


How to Install Handlebars and faceplate:


How to install pedals on your bike:


Congratulations on your Purchase:

This bicycle is backed by a 5 year factory warranty on the frame and full manufacturer’s warranty on parts.

Warranty is valid only for bicycle that has been properly and well-maintained under the following conditions:

Warranty includes:

  • All damaged or fractured or broken frame / fork / component which was caused by manufacturing or assembling error in factory.
  • Non functioning mechanism caused by manufacturing error in factory.

Warranty is NOT valid for:

  • Incorrect assembly, i.e pedals installed in the wrong crank arm. 
  • Normal degradation caused by frequent use, such as degrading brake shoe, deflated tire, etc
  • Surface defects, such as stained, marred, defaced, etc
  • Damaged caused by misuse or accident
  • Other damages which are not caused by factory error
  • Bicycles which have been sold to another party
  • Bicycles used in commercial capacity, such as rentals
  • Bicycles which have not been well-maintained

For any damages which is guaranteed by the brand as the first condition above, the brand will repair or replace damaged frame / fork / component with the one of the same brand or similar.

Warranty is valid for all Polygon and Marin bicycles to the original owner only, by showing the purchase invoice.  

To make a claim click here.

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