Polygon Xtrada 8.0 Mountain Bike

WAS $1,399.00 You Save $150.00

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The new Xtrada 8 is Polygon's top of the line hardtail alloy mountain bike and replaces the extremely popular Polygon Siskiu 7 from previous seasons. With several thousand of the Polygon Siskiu 7 sold globally last year, this spec level bike has been Polygon's most popular hardtail mountain bike to date. Polygon has listened to customer feedback and released the Xtrada 8 with some impressive upgrades such as a new Boost compatible frame, a better suspension fork, better gears and updated brakes.

The ALX super light 6061 hydroformed aluminium frame uses heat treated, hydroformed and butted tubing to give an optimal strength to weight ratio. The tapered headtube provides stable, front-end precision and the new Boost hub spacing on this frame allows for a stiffer wheel with more tyre clearance. The Boost system has also allowed Polygon to shorten the chainstays, which makes the back of the bike a lot easier to flick around corners. The frame comes internally routed, which provides cleaner lines to the bike and also reduces the chances of any cables getting snagged on trees or rocks while riding. Polygon is so confident in the performance of this frame that it has a lifetime warranty.

The Xtrada series utilises Polygon's new Wheel Fit Size System whereby each frame size is paired with the wheel size that best fits the rider and sets them up for optimal efficiency and power transfer. We pair 29˝ wheels with 18.5˝ and larger bikes, and more proportional, better-fitting 27.5˝ wheels for 17.5˝ and smaller bikes.

The Xtrada 8 build kit takes a step up, opting for Shimano's top of the line 1 x 11 XT M8000. The performance of the new XT M8000 is flawless - crisp and easy shifting, extremely durable and an all-day workhorse. The huge 11-46 tooth cassette means you won't miss having a double ring up front and you will have plenty of range for powering up long climbs. The clutch mechanism, which can be enabled and disabled with the flip of the grey lever at the top of the derailleur's parallelogram, is now externally adjustable with a 2mm hex key, a feature that allows riders to easily fine tune the amount of retention to their liking.

The suspension duties on the Xtrada 8 are handled by the new 2018 Rocksox Recon RL Solo Air fork which now benefits from the trickle-down technology of Sektor's stiff chassis and Reba's lightweight, motion control dampening. It features a15mm thru axle and a Lockout switch on the fork's leg to rapidly change from Open to Lock position and transform the way the bike behaves on the trail.

Completing the bike are Shimano M365 hydraulic disc brakes, a set of Entity XL2 wheels wrapped in Schwalbe Tough Tom tyres and a lightweight alloy Entity expert cockpit and Entity saddle and seatpost. If you are looking for a racing quality bike with durable and dependable components, the Polygon Xtrada 8.0 is the perfect bike for you. 


Key Features:

  • ALX Hydroformed 6061 XC Frame with Boost and 15mm thru axles
  • Rockshox Recon RL Air fork with Lockout and tapered steerer
  • Shimano XT M8000 1 x 11 Speed Drivetrain
  • Shimano SLX M-7000 shifters
  • Shimano BR-M365 Hydraulic Disc Brakes
  • 15mm Thru Axles
  • Schwalbe Tough Tom Tyres
  • Weight = 12.8kg (Medium frame, including pedals)
  • Entity XL2 Double Wall rims with Boost Hubs
  • LIFETIME Warranty on frame
  • Full manufacturer’s warranty on parts

Model Comparison Chart


Xtrada 5

Xtrada 6

Xtrada 7

Xtrada 8


SR Suntour XCM Coil Sprung Fork, Hydraulic Lockout

SR Suntour XCR Coil Sprung Fork,  Hydraulic Speed Lockout SR Suntour XCR Coil Sprung Fork,  Hydraulic Speed Remote Lockout Rockshox Recon RL Air Sprung Fork, Hydraulic Remote Lockout
Weight 13.6kg 13.4kg 13kg 12.8kg
Drivetrain Shimano Alivio Shimano Deore Deore XT XT M8000
Speed 18 Speed 20 Speed 1 x 10 Speed 1 x 11 Speed
Brakes Shimano M315 Hydraulic Shimano M315 Hydraulic Shimano BR-M365 Hydraulic Shimano BR-M365 Hydraulic
Price $749 $849 $1099 $1399
Extras Available in size 27.5" or 29" wheel Boost Frame
Available in size 27.5" or 29" wheel
Boost Frame
15mm Thru Axle
Available in size 27.5" or 29" wheel
Boost Frame
15mm Thru Axle
Available in size 27.5" or 29" wheel



Polygon Xtrada 8.0

2019 Giant Fathom 29er 1 Comparison


ALX XC SPORT 27.5” & 29” hydroformed, tapered head tube, Boost thru axle

ALUXX Aluminium Polygon better (Polygon is also a Boost frame)


Rockshox Recon RL Air Fork, 120mm (27.5”) / 100mm (29”) travel, BOOST Maxle Lite, w/ lockout

SR Suntour Axon Air Spring Fork, 15mm thru axle, lockout Polygon better


Entity Expert, Butted Alloy, 760mm

Giant Connect, Alloy Similar


Entity Expert, Forged Alloy E:45mm (27.5”) / E:35mm (29”)

Giant Connect, Alloy Similar


Entity Void Saddle, Cr-Mo Rail

Giant Contact, Cr-Mo Rail Similar


Entity Expert, Alloy, 27.2x350mm, 15mm offset

Giant Contact Switch, Dropper post Giant better


Prowheel Charm-32T-TT-B 32T BOOST 2-piece-crank

Praxis Cadet, 30T Giant better


Alloy body and cage

Alloy platform Similar


BSA threaded

Praxis Similar


KMC X-11 - 11 speed

KMC X-11 Same


Sunrace 11-speed 11-46T

Shimano SLX Giant better





Shimano Shadow XT RD-M8000 with clutch and direct mount - 11 Speed

Shimano SLX Polygon better


Shimano SL-M7000 SLX 

Shimano SLX  Same


Shimano BL-M365, Hydraulic, Shimano SM-RT30 Rotors, 160mm (29" F 180mm)

Shimano MT-400, Hydraulic Giant better


Schwalbe Tough Tom, 27.5”X2.25” / 29”X2.25”

Maxxis Icon 29"x2.2" Similar


Entity XL2 W/ Boost thru axle hubs, double wall alloy rims and stainless steel spokes

Giant Performance Tracker, thru axle, double wall alloy rims Polygon better (Boost)
FREE SHIPPING Yes (Some regional and remote postcodes excluded) No Polygon better
PRICE $1,399 $2,299 (Source: Giant Aust website Dec 2018) Polygon is $900 cheaper and is a higher spec bike. 
Size Chart




RIDER HEIGHT 155-170cm 170-180cm 180-190cm 190-200cm
SEAT TUBE LENGTH 15.5" 17.5" 18.5" 20"
WHEEL SIZE 27.5" 27.5" & 29" 29" 29"


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.




    A B C D E F G H I J K L M
Model Size Seat Tube Length Seat Tube Angle Effective Seat Tube Angle Head Tube Length Head Tube Angle Effective Top Tube BB Height BB Offset Chainstay Length Wheelbase Frame Reach Frame Stack Standover Height
Xtrada Small (27.5") 406 73 73 100 69 570 299 47 430 1089 383.5 610 713
  Medium (27.5") 456 73 73 100 69 585 299 47 430 1109 398.5 610 753
  Large (29") 470 71.7 73 100 69.5 606 316 60 440 1131 415 624 776
  Extra Large (29") 517 71.8 73 105 69.5 623 316 60 440 1148 430 630 806

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. 

If you are unsure of how to assemble this bike after viewing the instruction videos above, we recommend you ask for help from someone with knowledge of how to use basic hand tools. 

Please note, that all bicycles whether purchased online or instore, are mechanical devices and need to be serviced regularly to ensure proper functioning. 

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 LIFETIME factory warranty on frame and full manufacturer’s warranty on parts. Lifetime warranty refers to the lifetime of the original owner.

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
  • Bicycle which has been sold to other party
  • Bicycle used in commercial, such as rented
  • Bicycle which has 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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