Notify me when back in stock
Introducing the new Polygon Collosus DH8 mountain bike. There has been 3 years of development into this new DH frame which recently Kurt Sorge rode to the 2017 Redbull Rampage victory.
The new Colossus DH frame and suspension system has been carefully redesigned by the engineers at Polygon and with intensive feedback from the UR Team racing the DH World Cup Championships. In particular, Australians Mick Hannah “Sik Mik” and Tracey Hannah had a pivotal role in creating this new frame, with now better traction over rough sections, better pedalling efficiency, and a more precise steering feedback. The rear suspension system is now more progressive and the shock ramp up has been fine tuned. To increase rear end stiffness, the rear triangle is now made out of Polygon’s proprietary ACX Carbon, which was moulded and shaped to be extremely stiff laterally, soak up small vibrations and bumps better, keeping the rear wheel grounded for better traction, and also the added benefit of shedding weight from the frame. Testing wheel sizes was also a huge deal in making the Polygon Collosus DH8, with Polygon testing 26”, 27.5” and even 29” wheels. In the end, 27.5” wheels (or 650b) were the clear winners, offering extra speed on the flats, soaking up the punishment of rock gardens with ease and allowing to build a super nimble bike to tackle the most demanding technical sections in the Downhill World Cup calendar.
Part of the Polygon Collosus DH8’s appeal is the value you get when considering all the parts and components on this bike. Drivetrain and Brakes from Shimano Zee are most likely the best value downhill components out there, with tremendous durability, reliability and built specifically for the demands of frequent downhill riding. In fact, little separates Shimano Saint components from Shimano Zee these days, apart from weight and less range on Saint components. When you’re riding Zee, you know you have at your fingertips on some of the best technology available to Downhill riders.
An Integral part of a downhill rig is the shock and fork, and the Polygon Collosus DH8 does not disappoint. In fact, the suspension fork you find on this bike is the Rockshock Boxxer Team which is often seen on some other brands top of the line rigs. This is a Giant improvement on last years Colossus DH2 while still maintaining a price point that won’t break the budget. With an Air and Coil Spring System, Fast Black Stanchions and the lightest weight DH fork on the market right now, the revamped Rockshock Boxxer is now one of the best downhill forks on the market. Paired with a Rockshock Vivid R2C shock, the Polygon Collosus DH8 leverages the best R&D from Rockshox to complete a suspension setup allowing for optimal performance.
Completing the build, a Spank Spike Race28 DH Evo wheelset would be the most understated component on this Polygon DH8 and possibly the one that you will be most grateful for when riding. The tubeless rims with Dynamal and Oohbah technology are light are extremely sturdy, triple butted spokes and the reliable Novatec hubs make this a wheelset that wants to be punished on fast rock gardens, tested on big jumps and steered right into tight, sliding corners.
Kore completes the finishing kit with durable components, bars, stem and seatpost, giving you an extra boost of confidence to rail the next berm at full speed.
The Polygon Collosus DH is this year’s biggest release for Polygon Bikes and the DH8 proves just that.
Check out the video below for more info on the Polygon DH frame development:
Check out the video below for more info on the Polygon DH frame development:
and another video of Kurt Sorge shredding on the DH8 in Bali
- ALX Advanced Hydroformed 6061 Aluminium Downhill Frame with ACX Carbon Rear Triangle
- Floating Suspension System 3 technology (FS3)
- Full Shimano Zee 640 componentry
- RockShock Boxxer Team front fork
- RockShock Vivid R2C rear shock
- Kore Torsion handlebar and stem
- Spank Spike Race28 DH wheelset
- Schwalbe Magic Mary 27.5" x 2.35" tyres
- 5 Year Warranty on frame
- Full manufacturer’s warranty on parts
|Comparison||POLYGON COLLOSUS DH8||Giant Glory 27.5 1||Comments|
|FRAME||ALX Advanced 6061 Hydroformed Aluminium front triangle with ACX Carbon Rear triangle - Downhill FS3 suspension System||ALUXX SL Alloy, 8"/203mm Maestro suspension||Polygon with Carbon Rear Triangle|
|FORK||RochShox Boxxer Team||RockShox Boxxer Team||Same|
|REAR SHOCK||RockShox Vivid R2C||RockShox Vivid R2C||Same|
|HANDLEBAR||Kore Torsion M35, 800mm||Giant Contact SL DH||Polygon better|
|STEM||Kore Torsion 30mm||Giant Contact SL DH, Direct Mount||Polygon better|
|SADDLE||Entity Assault||Giant Contact||Similar|
|SEATPOST||Kore Aerox 3, 30.9x300mm||Giant Contact SL, 30.9mm||Polygon better|
|CRANKSET||Shimano Zee FC-M640 36T 165mm||Truvativ Descendant, 36T||Polygon better|
|BOTTOM BRACKET||Shimano Hollowtech II||Truvativ GXM TM integrated||Similar|
|CHAINGUIDE||e*thirteen LG1+||MRP G3 Mini Chain Guide||Similar|
|CHAIN||Shimano XT CN-HG95||KMC X10||Similar|
|CASSETTE||Shimano CS-5700 11-25T||Sram PG-1050 11-26T, 10sp||Polygon better|
|SHIFTING LEVER||Shimano Zee SL-M640||Sram GX||Polygon better|
|REAR DERAILLEUR||Shimano Zee RD-M640SS||Sram GX||Polygon better|
|BRAKE||Shimano Zee BR-M640||Sram Guide R||Polygon better|
|PEDAL||Kore Torsion SX V2||N/A||Polygon better|
|TYRE||Schwalbe Magic Mary 27.5" X 2.35”||Schwalbe Magic Mary 27.5x2.35||Same|
|WHEEL SET||Spank Spike Race28 DH Evo||Giant P-AM2||Polygon better|
|Price||$3,999 including delivery||$4,999||$1,000 difference|
|SEAT TUBE LENGTH||15"||16"||17"||18"|
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.
|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)||(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 (S) Low BB||595.1||377.6||62.8||110||Tapered 50/44~62/56||62.8||383||476.8||536||743.3||442.8||361.4||2.9 Rise||725.1||12 x 157||30.9|
|15 (S) Hi BB||593.4||380.3||63.1||110||Tapered 50/44~62/56||63.1||383||476.8||534.8||743.3||441.5||364.7||6.2 Rise||728.5||12 x 157||30.9|
|15 (M) Low BB||595.1||397.6||62.8||110||Tapered 50/44~62/56||62.8||383||494.8||556||763.1||442.8||361.4||2.9 Rise||724.8||12 x 157||30.9|
|15 (M) Hi BB||593.4||400.3||63.1||110||Tapered 50/44~62/56||63.1||383||494.8||554.8||763.3||441.5||364.7||6.2 Rise||728.3||12 x 157||30.9|
|15 (L) Low BB||595.1||425.3||62.8||110||Tapered 50/44~62/56||62.8||383||519.9||583.8||791||442.8||361.4||2.9 Rise||724.7||12 x 157||30.9|
|15 (L) Hi BB||593.4||428||63.1||110||Tapered 50/44~62/56||63.1||383||519.9||582.5||791||441.5||364.7||6.2 Rise||728.1||12 x 157||30.9|
|15 (XL) Low BB||595.1||447.3||62.8||110||Tapered 50/44~62/56||62.8||383||540.1||606||812.4||442.8||361.4||2.9 Rise||724.7||12 x 157||30.9|
|15 (XL) Hi BB||593.4||450||63.1||110||Tapered 50/44~62/56||63.1||383||540.1||604.5||813||441.5||364.7||6.2 Rise||728.1||12 x 157||30.9|
Next day dispatch
Shipping of Parts, Accessories and Apparel
Shipping of Bikes
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 firstname.lastname@example.org 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.
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:
- 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:
- 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.