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POLYGON Siskiu D5 27.5” Full Suspension Mountain Bike

Member‘s Card Price£700.00

Retail Price £1,000.00 Save 30%

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The Sisku D7 from Polygon is an entry level full-suspension mountain bike designed to handle everything from local trails, to all-day adventures in the mountains.

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Product code: 16196600 / 507433

The Sisku D7 from Polygon is an entry level full-suspension mountain bike designed to handle everything from local trails, to all-day adventures in the mountains.

The Polygon Sisku D5 is an all-round XC trail full suspension bike engineered for everything from local trail fun to all day mountain epics. Built around a lightweight aluminium suspension frame, the Sisku vD5 has modern geometry, slacker head tube angle, longer reach, lower BB and shorter chain-stay. Shimano hydraulic disc brakes ensure excellent stopping power and this model is offered in 27.5” wheel size. The 120mm suspension has a one-piece linkage system reducing flex in rear triangle.

About Polygon

Polygon are a world-renowned bike manufacturer with over 25 years of cycling expertise. Producing close to a million bikes a year out of their state-of-the-art manufacturing facilities, their commitment to innovation and craftsmanship has seen them pick up numerous industry awards and become the brand of choice for leading professionals. You’ll be in good company when you ride a Polygon.


  • Entry level all-round trail 27.5” mountain bike from Polygon
  • Frame: ALX XC 120mm Travel (27.5”) Taper H/T QR Boost
  • Dropout: Alloy QR Dropout
  • Fork: SR Suntour XCM HLO, QR 100mm, 120mm (27.5”) Travel
  • Rear Shock: SR Suntour Raidon LO Air E2E: 190mm x 51mm
  • Handle Bar: Entity Sport, Alloy
  • Stem: Entity Sport, Alloy
  • Grips/Bar Tape: Entity Rubber Grip
  • Head Set: Threadless Zero Stack Headset
  • Saddle: Entity Void Saddle
  • Seat Post: Entity Sport, Alloy
  • Seat Clamp: QR Seat Clamp
  • Chain Set: Shimano Altus FC-MT2102 36T
  • BB Set: Include Crank Set
  • Chain: KMC X9
  • Cassette: Shimano CS-HG200 11-36T
  • Shifting Lever - Right: Shimano SL-M31000, 2x9 Speed Trigger
  • Rear Derailleur: Shimano RD-M3100
  • Front & Rear Tyres: Spiderbait Tyre 27.5” x 2.25”
  • Rims: Alloy Double Wall 32H
  • Front Hub: Alloy Front Hub
  • Rear Hub: Alloy Rear Hub
  • Front & Rear Brake: Shimano Hydraulic Disc Brake

**Some minor assembly is required. See our video (below) or consult our assembly guide for assistance.

Unfortunately, we are not able to process faulty or warranty bike returns through our warehouse. If your bike develops a fault please take it to your nearest GO Outdoors store where we have a full workshop and trained mechanics who will be able to assist you.

Please note, this excludes Hathersage and Southport stores.


This product qualifies for the following delivery methods

Standard Delivery (3-5 Days) (FREE)


Once despatched you will receive updates from the courier.

Reserve and Collect (within an hour) (FREE)


We will notify you when your order is ready to collect.

Click and Collect (3-5 Days) (FREE)


You will be notified when your order is ready to collect.

AM Delivery (£7.95)


Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Standard Large Delivery (3-5 Days) (FREE)


Standard Large Delivery (3-5 Days) (£200.00)


Express 2 Day Delivery (£5.95)


Express delivery takes 2 working days when order is placed before 1pm Monday-Friday. Once despatched you will receive updates from the courier.

Bike Delivery (£4.95)


Bike delivery is £4.95. This applies to all bikes, and these orders are upgraded to a DHL courier service.

British Forces Post Office (BFPO) (FREE)


Delivery before 10:30am (£8.95)


Saturday Delivery (order by 6pm Friday) (£5.95)


Click and Collect Next Day (order by 6pm Mon - Fri) (£2.95)



Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

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