Polygon Siskiu D6 Full Suspension 29" MTB

The Polygon Siskiu D6 is a capable dual-suspension trail bike designed for riders who want smooth control, comfort, and confidence on a wide range of off-road terrain. Built around an ALX XC Trail alloy frame, it offers balanced handling, efficient pedaling, and stability on technical descents. Its modern trail geometry helps riders progress their skills while maintaining a fun and predictable ride feel.

With a Suntour XCM Boost 120mm fork paired with a Suntour Raidon LO Air rear shock, the Siskiu D6 delivers dependable suspension performance that absorbs bumps and trail chatter. A Shimano 1x10 drivetrain provides reliable shifting with a practical wide gear range for climbing and descending. Shimano hydraulic disc brakes ensure strong, consistent braking power in all trail conditions.

Equipped with tubeless-ready Polygon wheels, wide 2.25" tyres, and upgraded Shimano Boost hubs, the D6 rolls smoothly and offers excellent traction across varied surfaces. A 150mm dropper seatpost and Polygon Sport cockpit components complete the build, making the Siskiu D6 an ideal full-suspension trail bike for adventurous riders progressing their MTB journey.

FEATURES

Durable ALX XC Trail dual-suspension frame engineered for balanced handling and confident trail performance

Suntour XCM Boost 120mm suspension fork delivering improved stiffness and control on rough terrain

Suntour Raidon LO Air rear shock providing smooth damping and efficient bump absorption

Shimano 1x10 drivetrain offering reliable shifting and a wide gear range for climbs and technical trails

Shimano hydraulic disc braking system ensuring strong and consistent stopping power in all weather

Polygon tubeless-ready wheelset with Boost thru-axles for enhanced stability and trail durability

150mm alloy dropper seatpost allowing quick saddle height adjustment for climbs and descents

SIZE GUIDE

M Frame Size 165 to 175cm Height

L Frame Size 175 to 185cm Height

XL Frame Size 185 to 195cm Height

SPECIFICATIONS

Frame Material: ALX XC Trail Frame

Fork: Suntour XCM Boost, 120 mm travel

Rear Shock: Suntour Raidon LO Air, metric 190 x 45 mm

Shifter: Shimano Deore 10-Speed Trigger

Crankset: 32T

Cassette: Shimano, 11–48T

Rear Derailleur: Shimano Deore

Bottom Bracket: BSA threaded, 68/73 mm

Chain: KMC chain

Pedals: PP pedal

Saddle: Void Saddle

Seatpost: Alloy dropper, 150 mm travel

Handlebar: Polygon Sport

Stem: Polygon Sport

Headset: Threadless Zero Stack, ZS 44/28.6 | ZS 56/30

Wheelset: Polygon tubeless-ready, tubeless tape installed

Rims: Alloy double wall, 584 / 622-24, 32H, for tyre 584 / 622-35/68

Tyres: Deli 29" x 2.25"

Hubs:
Front: Shimano HB-MT400-B, thru-axle 15 x 110 mm, 32H, Center-Lock
Rear: Shimano FH-MT400-B, thru-axle 12 x 148 mm, 32H, Center-Lock

Brake Levers: Shimano Deore

Brake Calipers: Shimano Deore Hydraulic

Rotors: Shimano SM-RT10, Front 180 mm / Rear 160 mm, Center-Lock