Polygon Siskiu D5 - Full Suspension Mountain Bike
Polygon Siskiu D5 - Full Suspension Mountain Bike
Size Guide










Description
YOUR 1st FULL-SUSPENSION
The Siskiu D5 is Polygon's do-it-all bike for riders who want to experience their first full-suspension bike for hardtail money. With 120mm of smooth suspension, 27.5" wheels, a durable frame, and modern geometry, it's ready for everything from cross-country loops to singletrack adventures.
UNLOCK TRAILS ON A BUDGET
The Siskiu D5 is designed to conquer climbs with its efficient pedaling platform and lightweight feel. But don't be fooled, it's still plenty capable on the descents, handling corners and bumps with confidence. The Siskiu D5 lets you experience the thrill of both cross-country and trail riding without breaking the bank.
A TRUSTED BRAND
Polygon is a factory-direct brand with over 30 years of experience crafting high-performance bikes at competitive prices. Vertically integrated manufacturing ensures quality and cost savings. Their mountain bikes have been tested on the world stage at events like Redbull Rampage and the World Cup circuit, boasting a 5-year frame warranty for peace of mind.
SUNTOUR XCM HLO FORK
The SR Suntour XCM HLO fork with 120mm of travel smooths out bumps for a comfortable ride. The hydraulic lockout feature lets you firm up the suspension for efficient climbing, while preload adjustability helps you dial in the perfect feel.
SUNTOUR AIR SHOCK
The SR Suntour Raidon-LO AIR rear shock provides responsive suspension for a balanced and controlled ride. The air spring can be easily adjusted to match your weight and riding style, while the lockout feature firms up the suspension for efficient pedaling.
SHIMANO HYDRAULIC DISC BRAKES
Shimano MT201 hydraulic disc brakes deliver reliable stopping power in all weather conditions. These brakes are easy to use and require less hand strength, giving you more confidence and control when you need it most.
SHIMANO ALIVIO 2X9 DRIVETRAIN
The Shimano Alivio 2x9-speed drivetrain offers a wide range of gears to tackle varied terrain, from climbs to flats. Its intuitive shifting makes it easy to find the right gear for your ride.
UPGRADE READY
Tubeless-ready rims* allow for easy conversion to tubeless tires for improved traction and fewer flats. The frame also features internal routing for a dropper seat post, enhancing control and confidence on descents.
Specifications
We reserve the right to modify product specifications and details without prior notification.
Geometry
Length measurements are provided in millimeters and degrees, unless specified otherwise.
Size Guide
If you are outside of the size range or unsure of the best fit, give us a call and we'll help get you on the right bike.
Assembly
Explore our series of how-to video guides designed to walk you through every stage of assembling and fine-tuning your new Polygon Siskiu D5 - Full Suspension Mountain Bike. Whether you watch the entire series or focus on specific tasks, we've got you covered. Our dedicated Customer Service team is here to offer expert advice and ensure your bike is ready for the road.
Planning to assemble at home? Remember to install the pedals with care. Make sure to align them square and gently tighten to avoid stripping the threads.
Description
Specifications
Geometry
Size Guide
Assembly
YOUR 1st FULL-SUSPENSION
The Siskiu D5 is Polygon's do-it-all bike for riders who want to experience their first full-suspension bike for hardtail money. With 120mm of smooth suspension, 27.5" wheels, a durable frame, and modern geometry, it's ready for everything from cross-country loops to singletrack adventures.
UNLOCK TRAILS ON A BUDGET
The Siskiu D5 is designed to conquer climbs with its efficient pedaling platform and lightweight feel. But don't be fooled, it's still plenty capable on the descents, handling corners and bumps with confidence. The Siskiu D5 lets you experience the thrill of both cross-country and trail riding without breaking the bank.
A TRUSTED BRAND
Polygon is a factory-direct brand with over 30 years of experience crafting high-performance bikes at competitive prices. Vertically integrated manufacturing ensures quality and cost savings. Their mountain bikes have been tested on the world stage at events like Redbull Rampage and the World Cup circuit, boasting a 5-year frame warranty for peace of mind.
SUNTOUR XCM HLO FORK
The SR Suntour XCM HLO fork with 120mm of travel smooths out bumps for a comfortable ride. The hydraulic lockout feature lets you firm up the suspension for efficient climbing, while preload adjustability helps you dial in the perfect feel.
SUNTOUR AIR SHOCK
The SR Suntour Raidon-LO AIR rear shock provides responsive suspension for a balanced and controlled ride. The air spring can be easily adjusted to match your weight and riding style, while the lockout feature firms up the suspension for efficient pedaling.
SHIMANO HYDRAULIC DISC BRAKES
Shimano MT201 hydraulic disc brakes deliver reliable stopping power in all weather conditions. These brakes are easy to use and require less hand strength, giving you more confidence and control when you need it most.
SHIMANO ALIVIO 2X9 DRIVETRAIN
The Shimano Alivio 2x9-speed drivetrain offers a wide range of gears to tackle varied terrain, from climbs to flats. Its intuitive shifting makes it easy to find the right gear for your ride.
UPGRADE READY
Tubeless-ready rims* allow for easy conversion to tubeless tires for improved traction and fewer flats. The frame also features internal routing for a dropper seat post, enhancing control and confidence on descents.
We reserve the right to modify product specifications and details without prior notification.
Length measurements are provided in millimeters and degrees, unless specified otherwise.
If you are outside of the size range or unsure of the best fit, give us a call and we'll help get you on the right bike.
Size | Age | Range (cm) | Range (ft & in) |
---|---|---|---|
12" (Balance) | 2 - 4 | 80 - 100 | 2'6" - 3'1" |
16" | 4 - 7 | 100 - 120 | 3'4" - 4'0" |
20" | 7 - 9 | 120 - 135 | 4'0" - 4'5" |
24" | 9 - 11 | 135 - 145 | 4'5" - 4'9" |
If you are outside of the size range or unsure of the right fit for you, give us a call or come in and visit your local store to talk about your best options.
Explore our series of how-to video guides designed to walk you through every stage of assembling and fine-tuning your new Polygon Siskiu D5 - Full Suspension Mountain Bike. Whether you watch the entire series or focus on specific tasks, we've got you covered. Our dedicated Customer Service team is here to offer expert advice and ensure your bike is ready for the road.
Planning to assemble at home? Remember to install the pedals with care. Make sure to align them square and gently tighten to avoid stripping the threads.
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