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29er Mountain Bikes


Polygon Siskiu T7 Dual Suspension Mountain Bike

Polygon Siskiu T7 Dual Suspension Mountain Bike

  • AL6 Alloy Boost Trail frame with 150mm (27.5") / 140mm (29") travel
  • Rockshox Recon RL Solo Air Boost fork
  • X-Fusion O2 Pro rear air shock
  • 1 x 10 Shimano Deore XT drivetrain
  • Exaform 125mm Dropper seat post
Polygon Siskiu T7 Dual Suspension Mountain Bike

Polygon Siskiu T7 Dual Suspension Mountain Bike

$1,699.00 $1,349.00

$1,699.00 $1,349.00

Polygon Xtrada 6.0 Mountain Bike

Polygon Xtrada 6.0 Mountain Bike

  • ALX Hydroformed 6061 XC Frame with Boost hubs
  • SR Suntour XCR Coil Sprung Fork with Lock Out and tapered steerer,
  • Shimano Deore 2x10 Speed
  • Shimano Hydraulic Disc Brakes
Polygon Xtrada 6.0 Mountain Bike

Polygon Xtrada 6.0 Mountain Bike

$749.00 $529.00

$749.00 $529.00

New

New

2020 Polygon Siskiu D7 Dual Suspension Mountain Bike

2020 Polygon Siskiu D7 Dual Suspension Mountain Bike

  • ALX Alloy Boost XC frame with 120mm travel
  • Rockshox Recon RL Solo Air front suspension fork
  • XFusion O2 Pro RL air shock 
  • 1 x 11 Shimano Deore XT / SLX drivetrain
  • Entity XL2 tubeless ready wheelset
2020 Polygon Siskiu D7 Dual Suspension Mountain Bike

2020 Polygon Siskiu D7 Dual Suspension Mountain Bike

$1,199.00

$1,199.00

Clearance

Clearance

Polygon Siskiu D5 - Dual Suspension Mountain Bike

Polygon Siskiu D5 - Dual Suspension Mountain Bike

  • ALX Advanced Alloy Frame with internal routed gear cables
  • Suntour XCM, Lockout Fork
  • Suntour Raidon LO-R Air Rear Shock
  • 27 Speed Shimano Alivio Drivetrain
  • Shimano Hydraulic Disc Brakes
  • 27.5" Araya Wheelset
Polygon Siskiu D5 - Dual Suspension Mountain Bike

Polygon Siskiu D5 - Dual Suspension Mountain Bike

$899.00 $699.00

$899.00 $699.00

Polygon Xtrada 5.0 Mountain Bike

Polygon Xtrada 5.0 Mountain Bike

  • ALUTECH hydroformed Aluminum Frame
  • Suntour XCM Suspension Fork with hyd lockout - 120mm Travel
  • Shimano Alivio M4000 18 Speed
  • Shimano Hydraulic Disc Brakes 
  • 27.5" Araya Double Wall Alloy Rims
Polygon Xtrada 5.0 Mountain Bike

Polygon Xtrada 5.0 Mountain Bike

$629.00 $449.00

$629.00 $449.00

Polygon Xtrada 8.0 Mountain Bike

Polygon Xtrada 8.0 Mountain Bike

  • ALX Hydroformed 6061 XC Frame with Boost Hubs and 15mm thru axles
  • Rockshox Recon RL Air Fork with lockout and tapered steerer
  • Shimano Deore XT 1 x 11 Speed Drivetrain
  • Shimano SLX shifters
  • Shimano BR-M365 Hydraulic Disc Brakes
  • Schwalbe Tough Tom Tyres
  • Weight: 28.2lb
Polygon Xtrada 8.0 Mountain Bike

Polygon Xtrada 8.0 Mountain Bike

$1,099.00 $799.00

$1,099.00 $799.00

Clearance

Clearance

2019 Polygon Siskiu D7 Dual Suspension Mountain Bike

2019 Polygon Siskiu D7 Dual Suspension Mountain Bike

  • ALX Advanced Alloy Frame with internal routed gear cables and 2HRU axle system
  • Rockshox 30 Silver Solo Air Fork
  • Suntour Epicon LO-R Air Rear Shock
  • 20 Speed Shimano Deore XT / Deore Drivetrain
  • 27.5" Araya Wheelset
2019 Polygon Siskiu D7 Dual Suspension Mountain Bike

2019 Polygon Siskiu D7 Dual Suspension Mountain Bike

$1,199.00 $999.00

$1,199.00 $999.00

Polygon Siskiu N8 Dual Suspension Mountain Bike

Polygon Siskiu N8 Dual Suspension Mountain Bike

  • ALX Enduro Alloy Boost Trail frame with 170mm (27.5") / 160mm (29") travel
  • Rockshox Yari RC DebonAir Boost front air fork
  • Fox Performance Float DPX2 air shock with external rebound and 3 position compression
  • 1 x 12 SRAM NX Eagle drivetrain
  • EXA Form Drive Dropper seat post
Polygon Siskiu N8 Dual Suspension Mountain Bike

Polygon Siskiu N8 Dual Suspension Mountain Bike

$2,499.00 $2,099.00

$2,499.00 $2,099.00

Polygon Siskiu T8 Dual Suspension Mountain Bike

Polygon Siskiu T8 Dual Suspension Mountain Bike

  • AL6 Alloy Boost Trail frame with 150mm (27.5") / 140mm (29") travel
  • Rockshox Revelation RC front air fork
  • Rockshox Deluxe RT3 air shock 
  • 1 x 11 Shimano Deore XT / SLX drivetrain
  • 125mm Exaform Dropper Seatpost, 30.9mm
 
Polygon Siskiu T8 Dual Suspension Mountain Bike

Polygon Siskiu T8 Dual Suspension Mountain Bike

$2,099.00 $1,899.00

$2,099.00 $1,899.00

Polygon Xtrada 7.0 Mountain Bike

Polygon Xtrada 7.0 Mountain Bike

  • ALX Hydroformed 6061 XC Frame with Boost Hubs and 15mm thru axles
  • SR Suntour XCR with Remote Lock Out Suspension Fork and tapered steerer
  • Shimano Deore XT 1 x 10 Speed Drivetrain
  • Shimano BR-M365 Hydraulic Disc Brakes
  • Schwalbe Tough Tom Tires
Polygon Xtrada 7.0 Mountain Bike

Polygon Xtrada 7.0 Mountain Bike

$899.00 $649.00

$899.00 $649.00

New

New

2020 Polygon Siskiu D7 - Dropper Post Edition - Dual Suspension Mountain Bike

2020 Polygon Siskiu D7 - Dropper Post Edition - Dual Suspension Mountain Bike

  • ALX Alloy Boost XC frame with 120mm travel
  • Rockshox Recon RL Solo Air front suspension fork
  • XFusion O2 Pro RL air shock 
  • Tranz X 150mm Dropper seatpost
  • 1 x 11 Shimano Deore XT / SLX drivetrain
  • Entity XL2 tubeless ready wheelset
2020 Polygon Siskiu D7 - Dropper Post Edition - Dual Suspension Mountain Bike

2020 Polygon Siskiu D7 - Dropper Post Edition - Dual Suspension Mountain Bike

$1,349.00

$1,349.00

New

New

2020 Polygon Siskiu T7 SRAM SX Eagle LTD Dual Suspension Mountain Bike

2020 Polygon Siskiu T7 SRAM SX Eagle LTD Dual Suspension Mountain Bike

  • AL6 Alloy Boost Trail frame with 150mm (27.5") / 140mm (29") travel
  • RockShox Recon RL Solo Air Boost + X-Fusion 02 PRO RL Air
  • Sram SX Eagle 12 Speed, 32t Chainring, 11-50t Cassette
  • Tektro HD-M735 4/2 pistons brakes
  • ExaForm Ragei 125mm (S-M) / 150mm (L-XL), Zero Offset
2020 Polygon Siskiu T7 SRAM SX Eagle LTD Dual Suspension Mountain Bike

2020 Polygon Siskiu T7 SRAM SX Eagle LTD Dual Suspension Mountain Bike

$1,699.00

$1,699.00

New

New

2020 Polygon Siskiu T8 Shimano SLX 12sp LTD Dual Suspension Mountain Bike

2020 Polygon Siskiu T8 Shimano SLX 12sp LTD Dual Suspension Mountain Bike

  • AL6 Alloy Boost Trail frame with 150mm (27.5") / 140mm (29") travel
  • RockShox Revelation RC Solo Air Boost + RockShox Deluxe RT3 Debonair, Special Tuning 
  • Shimano SLX M7100 12 Speed, 32t Chainring, 10-51t Cassette
  • Tektro HD-M745 4 pistons brakes
  • ExaForm Ragei 125mm (S-M) / 150mm (L-XL) dropper
2020 Polygon Siskiu T8 Shimano SLX 12sp LTD Dual Suspension Mountain Bike

2020 Polygon Siskiu T8 Shimano SLX 12sp LTD Dual Suspension Mountain Bike

$2,099.00

$2,099.00

New

New

2020 Polygon Xtrada 6.0 Mountain Bike

2020 Polygon Xtrada 6.0 Mountain Bike

  • ALUTECH hydroformed Aluminum Frame
  • SR Suntour XCR Coil Sprung Fork with Lock Out 
  • Shimano Deore M6000 1x10 Speed
  • Shimano MT-201 Hydraulic Disc Brakes
2020 Polygon Xtrada 6.0 Mountain Bike

2020 Polygon Xtrada 6.0 Mountain Bike

$799.00

$799.00

Polygon Premier 4.0 Mountain Bike

Polygon Premier 4.0 Mountain Bike

  • Hydroformed 6061 Alutech Aluminum Frame
  • Suntour XCM Suspension Fork
  • Shimano Acera 24 Speed Drivetrain
  • 27.5” Double Wall Rims with Alloy hubs
  • Tektro Hydraulic Disc Brakes 
Polygon Premier 4.0 Mountain Bike

Polygon Premier 4.0 Mountain Bike

$499.00 $399.00

$499.00 $399.00

Polygon Premier 5.0 Mountain Bike

Polygon Premier 5.0 Mountain Bike

  • Hydroformed 6061 Alutech Aluminum Frame
  • Suntour XCM Suspension Fork with Lockout
  • Shimano Acera 27 Speed Drivetrain
  • 27.5” or 29" Double Wall Rims with Shimano hubs
  • Tektro Hydraulic Disc Brakes 
Polygon Premier 5.0 Mountain Bike

Polygon Premier 5.0 Mountain Bike

$549.00 $449.00

$549.00 $449.00

Polygon Siskiu N9 Dual Suspension Mountain Bike

Polygon Siskiu N9 Dual Suspension Mountain Bike

  • ALX Enduro Alloy Boost Trail frame with 170mm (27.5") / 160mm (29") travel
  • Fox 36 Boost front air fork
  • Fox Performance Float DPX2 air shock with external rebound and 3 position compression
  • 1 x 12 SRAM GX Eagle drivetrain
  • EXA Form Drive Dropper seat post
Polygon Siskiu N9 Dual Suspension Mountain Bike

Polygon Siskiu N9 Dual Suspension Mountain Bike

$2,799.00 $2,599.00

$2,799.00 $2,599.00

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Bikes Online carry a great range of Mountain Bikes with 29-inch wheels, the massively popular bigger size wheel that promises greater speed, better traction and enhanced comfort over rougher trails. 29-inch wheel Mountain Bikes got their name due to the larger wheel size, and are available in hardtails and dual suspension bikes from Polygon Bikes. With a larger wheel, more of your tire is in contact with the ground, giving you more traction overall. The larger wheel diameter will also make it easier to sustain speed, as the centrifugal energy created by the wheels spinning retains more momentum than smaller wheels.
29-inch wheels, or 29ers as most riders call them, are best for flowing trails, or longer rides where speed is paramount. For technical trails, 29ers might feel a bit too big, sluggish at times, making it harder to go around obstacles. If you’re riding in trails like these, you might be better off with the smaller 27.5inch mountain bikes we have available.

When purchasing a new mountain bike, it is important to understand the difference between wheels sizes and how that translates into real-world riding. If you’re still not sure which wheel size is best for you, feel free to reach out to our customer service team, and we will make sure you get the right bike for you! Bikes Online offer Free Shipping to lower 48 states, and a Free 14 Day Test Ride on all bikes so you can make sure your next bike is the perfect bike.

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