27.5-Inch Bikes (Ages 12 to Teens)


This is the point where your child graduates into adult size bikes and begins to truly find their independence.

2024 Polygon Cascade 4 - 27.5 inch Mountain Bike
- Alutech XC Sport 27.5” Aluminium Frame
- XCE28 100mm Travel Fork
- Shimano Altus 3x8-Speed Drivetrain
- Hydraulic Disc Brakes
$649.00 $549.00
$649.00 $549.00
2024 Polygon Cleo 2 - 27.5 inch Mountain Bike
- Hydroformed AL6 Alutech Aluminium frame
- Shimano Acera/Altus 24 Speed Drivetrain
- 120mm Suspension Fork
- 27.5” Polygon Double Wall Rims
- Tektro Hydraulic Disc Brakes
$699.00 $599.00
$699.00 $599.00
2024 Polygon Xtrada 6 1x11 - Mountain Bike
- ALX XC Sport 6061 Aluminum Frame
- Modern XC Geometry
- Suntour XCR 32, 120mm Travel Fork
- Shimano Deore M5100 1x11 Speed
- Shimano Hydraulic Disc Brakes
$1,199.00 $899.00
$1,199.00 $899.00
2024 Marin Bolinas Ridge 2 - Mountain Bike
- Series 1 6061 Aluminum, 27.5”/29" Wheels
- Suntour XCM Suspension Fork
- Shimano 3x8 Speed Drivetrain
- Tektro Hydraulic Disc Brakes
- Modern Trail Geometry with Low Standover
$859.00 $649.00
$859.00 $649.00
2024 Marin Wildcat Trail 1 - Women's Mountain Bike
- Series 1 6061 Aluminum, 27.5" Wheels
- Suntour XCE Suspension Fork
- Shimano 3x7 Speed Drivetrain
- Power CX7 Mechanical Disc Brakes
- Modern Trail Geometry with Low Standover
$749.00 $599.00
$749.00 $599.00
2024 Polygon Xtrada 5 2x10 - Mountain Bike
- ALX XC Sport 6061 Aluminum Frame
- Modern XC Geometry
- Suntour XCM, 120mm Travel Fork
- Shimano Deore M4100 2x10 Speed
- Tektro Hydraulic Disc Brakes
$999.00 $799.00
$999.00 $799.00
2024 Marin Wildcat Trail 2 - Women's Mountain Bike
- Series 2 6061 Aluminum, 27.5” Wheels, Women's Specific Frame
- SR Suntour XCM Fork, Shimano Altus 3x8 Speed Drivetrain
- Tektro M275 Hydraulic Disc Brakes
- Modern Trail Geometry with Low Standover
- Wide 25mm Rims
$899.00 $699.00
$899.00 $699.00
2024 Polygon Cascade 3 - 27.5 inch Mountain Bike
- AL6 XC Sport 27.5” Aluminium Frame
- Suntour XCE28 100mm Travel Fork
- Shimano Tourney 3x7-Speed Drivetrain
- Mechanical Disc Brakes
$599.00 $499.00
$599.00 $499.00
2024 Polygon Premier 4 - Mountain Bike
- Hydroformed 6061 Alutech XC Sport Aluminium Frame
- Suntour XCM Suspension Fork
- Shimano Acera 2x8 Speed Drivetrain
- 27.5” Double Wall Rims with Alloy hubs
- Tektro Hydraulic Disc Brakes
$739.00 $599.00
$739.00 $599.00
2024 Polygon Premier 5 - Mountain Bike
- Hydroformed 6061 Alutech Aluminium Frame
- Suntour XCM Suspension Fork with Lockout
- Shimano Altus 2x9 Speed Drivetrain
- 27.5” or 29" Double Wall Rims with Shimano hubs
- Tektro Hydraulic Disc Brakes
$839.00 $699.00
$839.00 $699.00
2024 Polygon Cascade 2 - 27.5 inch Mountain Bike
- AL6 XC Sport 27.5” Aluminium Frame
- Suntour XCE28 100mm Travel Fork
- 100mm Suspension Fork
- Shimano Tourney 3x7-Speed Drivetrain
- Mechanical Disc Brakes
$539.00 $449.00
$539.00 $449.00
2024 Marin Wildcat Trail 3 - Women's Mountain Bike
- Series 2 6061 Aluminum, 27.5” Wheels, Women's Specific Frame
- SR Suntour XCM Fork, Shimano Altus 3x8 Speed Drivetrain
- Tektro M275 Hydraulic Disc Brakes
- Modern Trail Geometry with Low Standover
- Wide 25mm Rims
$999.00 $799.00
$999.00 $799.00
2024 Polygon Xtrada 7 1x12 - Mountain Bike
- ALX XC Sport 6061 Aluminum Frame
- Modern Cross Country Geometry
- 120mm Travel Air Spring Fork
- Shimano Deore M6100 1x12 Speed
- Shimano Hydraulic Disc Brakes
$1,499.00 $1,199.00
$1,499.00 $1,199.00
2021 Polygon Premier 4 - 27.5 inch Mountain Bike
- Hydroformed 6061 Alutech XC Sport Aluminium Frame
- Suntour XCM Suspension Fork
- Shimano Acera 2x8 Speed Drivetrain
- 27.5” Double Wall Rims with Alloy hubs
- Tektro Hydraulic Disc Brakes
$729.00 $549.00
$729.00 $549.00
2022 Marin Rock Spring 1 LTD - Mountain Bike
- Series 1 6061 Aluminum Frame
- Suntour XCE Suspension Fork
- Shimano 3x8 Speed Drivetrain
- Tektro Hydraulic Disc Brakes
- Modern Trail Geometry with Low Standover
$749.00 $549.00
$749.00 $549.00
2022 Polygon Cascade 4 - 27.5 inch Mountain Bike
- Alutech XC Sport 27.5" Aluminium
- Suntour XCE Suspension Fork
- Shimano Altus / Tourney 24 Speed Drivetrain
- 27.5” Polygon Double Wall Rims
- Hydraulic Disc Brakes
$649.00
$649.00
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27.5-Inch Bikes (Ages 12 to Teens)
Ideal Rider. 27.5-inch bikes are designed to bring true independence to riders looking for more freedom. Our 27.5-inch mountain bikes are perfect for riders looking to make their own way to school, back from sports practice or beginning to ride off-road. Children who want to blaze their own path will love our bikes.
Ideal Terrain. With front suspension, disc brakes and semi-knobbly tyres, these bikes are designed to be ridden on road in comfort or off-road with style. If your child needs to take a back road or cut through some trails to get where they want to go, they will have no issues with these capable bikes. These bikes are still efficient and fun on the road, so even if your child never leaves the road they will still love these bikes.
Frames. Our 27.5-inch mountain bikes are mostly manufactured using alloy frames due to the lighter weight, durability and cost effectiveness of the material. There is no need to worry about your child jamming them in the rack at school, throwing them down in a friend's front yard or jumping over the curbs on them. Our bikes are designed to be used.
Drivetrain. Due to the variety of use cases and budgets in 27.5 mountain bikes, drivetrains are also quite varied. 1x drivetrains only have one gear at the front with a 10 to12-speed wide range cassette on the rear. While they are more reliable, require less maintenance and are often lighter they come at a cost. Our budget-friendly bikes are often equipped with three gears up front and 7 to9 on the rear. While they may be heavier and require more maintenance, they offer a wider gear range, better gear ratios and a gear for any circumstance.
Suspension. Like the drivetrain, suspension specifications often mirror the price. Suspension forks with a coil spring and basic preload controls are often heavier as well as being less customisable. However, they are reliable and require significantly less maintenance due to their simpler technology. Higher-end bikes come with forks that have air springs, more dampening tuning and can be custom-tuned to a riders weight. While these forks do require extra maintenance for their premium technology, each rider can achieve their perfect settings no matter their weight or riding style. Air sprung forks are also a lot lighter than their coil-sprung counterparts resulting in a more balanced ride and greater control.
Tyres. Most of our 27.5 teen bikes are equipped with tyres suitable for both on and off-road use. Smaller knobs offer extra traction on the dirt while maintaining a low rolling resistance on the road. Because our 27.5 teen bikes are designed to be ridden anywhere, the tyres are designed for any type of terrain.