Polygon Siskiu D7.0 Dual Suspension Mountain Bike

Or 6 x $249.83 Per Month

Size Small available only. For more sizes, please see the new 2019 Polygon Siskiu D7

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The Polygon Siskiu D7 continues its success from previous years, as being one of the most sort after dual suspension bikes on the market, and yet, it has been again improved this year – continuing to push the boundaries in performance trail bikes.

This year the lightweight frame continues with its 120mm, linkage driven single pivot suspension system that has minimal pedal bob.  The D7 frame, like the D6, has been improved. Polygon have added a single piece linkage which has resulted in reduced lateral flex in the rear triangle and improved the linear movement and performance of the shock. Furthermore, the frame continues to internally route all gear cables, resulting in a frame with really clean lines.

The D7 does feature upgrades over the D6, mainly come in the form of branded components. Rockshox now supply their Rockshox 30 Silver Solo Air fork and its a superb addition to this bike – as the forks are known for their linear, plush and predictable feeling

The Suntour EpiXon rear air shock features a hydraulic speed lockout and rebound adjust so you can customize the sensitivity to each and every trail you encounter.

As a nod of the head to performance, it is now a double chain ring crankset, reducing the weight and unwanted duplication of gear ratios, commonly found in triple ring cranksets.

The crankset features a hollowtech spindle, external bearings, and with Shimano Deore now branding the crankarm, you can rest assure that there is the Shimano guarantee of compatibility with the Shimano Deore cassette and Shimano Deore XT rear derailleur. The clutch on the rear derailleur continues to be a well-deserved asset on the bike, removing any unwanted chain slap.

Keen observers will note that Shimano hubs have now also been spec’d on the bike, these free rolling hubs add to the reliability of the entire package.

 The Polygon Recon 4.0 was reviewed by Flow Mountain Bike Magazine. The Siskiu D7 is the new version of the Recon 4. Click here to check out the review.

Key Features

  • ASX Advanced Alloy linkage driven single pivot XC frame with 4.7" of suspension travel and 2HRU axle system
  • Internal routing
  • Tapered Head Tube
  • Rockshox 30 Silver Solo Air, Travel 120mm 
  • Suntour EpiXon LO-R Air rear shock with hydraulic lockout
  • 20 Speed Shimano Deore XT / Deore group set
  • 5 Year Warranty on frame
  • Full manufacturer’s warranty on parts
  • Weight 13.5kg (Medium frame including Pedals)


Model Comparison Chart


Siskiu D5

Siskiu D7

Forks SR Suntour XCM Hydraulic Lockout, Travel 120mm, coil Rockshox 30 Silver Solo Air, Travel 120mm Hydraulic lockout
Weight 14.5kg 13.5kg
Drivetrain Shimano Alivio/Deore Shimano XT/Deore
Speed 27 Speed 2x10 - 20 Speed
Brakes Shimano BR-M315 Hydraulic Disc Brakes Shimano M365 Hydraulic Disc Brakes
Wheelset Araya DM-650 Doublewall alloy Araya DM-650 Doublewall Alloy
Price $1,099 $1599

Shimano Hubs

Rear thru axle


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2017 Polygon Siskiu D7 (27.5 inch)

2017 Giant Anthem 3 (27.5 inch)



ALX Alloy Cross Country, 120mm travel

Alloy Cross Country frame 110mm travel



Rockshox 30 Silver Solo Air, Travel 120mm

RockShox Recon Gold RL Solo Air, 120mm Travel

Giant better


SR Suntour EpiXon LO-R

RockShox Deluxe RT

Giant better


Entity Expert, Alloy, 740mm

Giant Connect 31.8 Alloy



Entity Expert, Alloy 60mm

Giant Connect Alloy



FSA Cartridge Sealed Bearing

Giant Sealed Bearing



Entity Assault Saddle

Giant Contact Neutral



Entity Expert, Alloy, 30.9mm

Giant Connect, Alloy 30.9mm



Shimano Deore FC-M617, 36x22T

Shimano Deore 36x22T



VP Component VP-349, Alloy

None included

Polygon better


Shimano Hollowtech 2 Integrated

Shimano Press-Fit



Shimano Deore HG50 11-36T

Shimano Deore HG50



Shimano Deore FD-M617

Shimano Deore



Shimano Deore XT RD-M786SGS clutch

Shimano Deore

Polygon better


Shimano Deore SL-M610 - 20sp

Shimano Deore - 20sp



Shimano M365 Hydraulic

Shimano M365 Hydraulic



Schwalbe Smart Sam, 27.5”x2.25”

Schwalbe Racing Ralph

Giant better


Araya DM 650

Giant XC3 27.5



Stainless Steel Spokes




Shimano RM33

Giant Sport Tracker, sealed bearings

Polygon better


Yes (some regional and remote postcodes excluded)


Polygon better



$2,499 (Source: Giant Website AUS Sept 16)

$1,000 Difference

Size Chart




RIDER HEIGHT 160-170cm 170-180cm 180-190cm
SEAT TUBE LENGTH 15.5" 17.5" 19.5"


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.



Siskiu D7

Sizes (A) Stack (mm) (B) Reach (mm) (C) Head Tube Angle (D) Head Tube Length (mm) (E) Head Tube Diameter (mm) (F) Seat Tube Angle (G) Seat Tube Length (C-T) (mm) (H) Top Tube Actual (mm) (I) Top Tube Effective (mm) (J) Front Center (mm) (K) Fork Offset (mm) (L) Rear Center (mm) (M) BB Height (Ground Clerance) (mm) (N) BB Height (BB Drop/Rise) (O) Stand Over Height (mm) (P) Rear Wheel Axle / O.L.D (mm) (Q) Seatpost Size (mm)
15 583 403 67.5 115 ZS44 | ZS56 74.5 385 549 565 684 44 438 331 22 Drop 673 142 x12 / 135 x 9 (2HRU Axle system) 30.9
17 583 423 67.5 115 ZS44 | ZS56 74.5 435 564 585 704 44 438 331 22 Drop 700 142 x12 / 135 x 9 (2HRU Axle system) 30.9
19 592 446 67.5 125 ZS44 | ZS56 74.5 485 589 610 730 44 438 331 22 Drop 736 142 x12 / 135 x 9 (2HRU Axle system) 30.9
20.5 592 466 67.5 125 ZS44 | ZS56 74.5 520 612 630 750 44 438 331 22 Drop 754 142 x12 / 135 x 9 (2HRU Axle system) 30.9


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 quick release front wheel:



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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