Polygon Siskiu D5 Full Suspension 27.5" MTB

The Polygon Siskiu D5 is a capable dual-suspension trail bike designed to deliver comfort, confidence, and control for riders exploring off-road terrain. Its ALX XC Trail alloy frame provides a strong and responsive platform, giving riders stability on descents and efficiency on climbs. With dialled trail geometry, the D5 offers balanced handling that suits beginners and progressing riders alike. Featuring a Suntour XCM 120mm fork paired with a Suntour Raidon LO Air rear shock.

The Siskiu D5 absorbs bumps and trail vibrations for a smoother, more controlled ride across roots, rocks, and uneven surfaces. A Shimano 9-speed drivetrain ensures dependable shifting and practical gear range for varied trails, while Shimano hydraulic disc brakes provide consistent braking performance in all conditions. With durable double-wall rims, 27.5" performance tyres, and Polygon Sport alloy finishing components, the Siskiu D5 is ready for adventure. It’s the ideal full-suspension choice for riders wanting to step into trail riding with comfort, control, and quality.

FEATURES

Durable ALX XC Trail dual-suspension frame designed for balanced handling and off-road control

Suntour XCM 120mm suspension fork providing improved comfort and terrain absorption on rough trails

Suntour Raidon LO Air rear shock delivering smooth, adjustable damping for better traction and stability

Shimano 9-speed drivetrain offering reliable shifting and practical gearing for varied terrain

Powerful Shimano MT200 hydraulic disc brakes ensuring consistent and confident stopping power

27.5" performance tyres and alloy double-wall rims enhancing traction, durability, and ride stability

Polygon Sport alloy cockpit components designed for dependable handling and rider comfort

SIZE GUIDE

S Frame Size 155 to 165cm Height

M Frame Size 165 to 175cm Height

L Frame Size 175 to 185cm Height

SPECIFICATIONS

Frame Material: ALX XC Trail Frame

Fork: Suntour XCM, 120 mm travel, QR 100 mm

Rear Shock: Suntour Raidon LO Air, E2E 190 x 51 mm

Shifter: Shimano, 9-speed trigger

Crankset: 32T

Cassette: Shimano, 11–46T

Rear Derailleur: Shimano, direct attach

Bottom Bracket: BSA threaded, 68/73 mm

Chain: KMC chain

Pedals: Alloy cage pedal with reflector

Saddle: Void Saddle

Seatpost: Polygon Sport Alloy

Handlebar: Polygon Sport Alloy

Stem: Polygon Sport Alloy

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

Wheelset: Alloy double wall

Wheel Size: 27.5"

Tyres: Performance tyre 27.5" x 2.25"

Rims: Alloy double wall, 584-15, 32H, for tyre 584-35/68

Hubs: Front: Alloy QR x 100 mm, 32H, Center-Lock; Rear: Alloy Boost QR x 141 mm, 32H, Center-Lock

Brake Levers: Shimano MT200 hydraulic disc brake

Brake Calipers: Shimano MT200 hydraulic disc brake

Rotors: Front: 180 mm; Rear: 160 mm, Center-Lock