Polygon Siskiu D6 - Dual Suspension Mountain Bike

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The new Polygon Siskiu D6 is perhaps the most improved bike in the Polygon range, there have been a raft of changes that has resulted in the perfect blend of performance and value.

Whilst the frame continues with its clean looks as a result of the tapered head tube and internal cable routing, Polygon have added a new single piece linkage which has resulted in reduced lateral flex in the rear triangle and improved the linear movement and performance of the shock.

A big upgrade is the Suntour XCR Air suspension fork. It is much lighter due to the air rather than coil spring and also features 32mm stanchions and magnesium lowers. This fork has so many of the performance features that you typically find in higher priced equivalents. It features a hydraulic lockout so you can stiffen up the fork for improved climbing performance. A Suntour Raidon rear air shock will also be able to take the sting out of the tail of most mountain bike rides, and also still allow the bike to climb effectively with the help of its lock out lever.

The drivetrain is truly remarkable on this bike, it features a two piece crank, complete with hollow spindle together with external bearings, which provide a much more stable and efficient base through which all the power is transferred into the drivetrain. A smart and sensible mix of Shimano SLX and Deore components results in superb 30-speed groupset. It is simply unheard of in bikes in this category to feature a 10 speed cassette combined with a clutch derailleur. The clutch derailleur drastically reduces chain slap and increases the shifting performance especially over difficult terrain Brakes too have been improved with the Shimano callipers now pulling on 180mm front rotor, together with the 160mm rears, to give powerful braking performance in all conditions.

There is simply no other dual suspension bike that ticks all the boxes in the market today like the Siskiu D6.


Key Features

  • ASX Advanced Alloy linkage driven single pivot XC frame with 4.7" of suspension travel and 2THRU axle system
  • Tapered Head Tube
  • Internally Routed Gear Cables
  • Suntour XCR Air fork, Travel 120mm, 1-1/8” Steerer, hydraulic lockout
  • Suntour Raidon LO-R Air rear shock
  • 30 Speed Shimano SLX / Deore group set
  • 27.5 inch Araya wheelset with Schwalbe Smart Sam tyres.
  • 5 Year Warranty on frame
  • Full manufacturer’s warranty on parts
  • Weight 13.9kg (Medium frame)

Model Comparison Chart


Siskiu D5

Siskiu D6

Siskiu D7

Siskiu D8

Forks SR Suntour XCM Hydraulic Lockout, Travel 120mm, coil SR Suntour XCR Air Fork, Travel 120mm, Hydraulic lockout Rockshox 30 Silver Solo Air, Travel 120mm Hydraulic lockout Rockshox Recon Gold with Remote Lockout,
Travel 120mm,
15mm thru Axle
Weight 14.5kg 13.9kg 13.5kg 13.2kg
Drivetrain Shimano Alivio/Deore Shimano SLX/Deore Shimano XT/Deore Shimano Deore XT/ SLX
Speed 27 Speed 30 Speed 2x10 - 20 Speed 2x11 - 22 Speed
Brakes Shimano BR-M315 Hydraulic Disc Brakes Shimano BR-M365 Hydraulic Disc Brakes Shimano M365 Hydraulic Disc Brakes Shimano Deore BR-MT500 Hydraulic Disc Brakes
Wheelset Araya DM-650 Doublewall alloy Araya DM-650 Doublewall alloy Araya DM-650 Doublewall Alloy Mavic Crossride 27.5"
Price $999 $1199 $1499 $1999

Shimano Hubs

Rear thru axle 

Shimano Hubs

Rear thru axle

Front and rear thru axle

Remote fork lockout

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