Trek Precaliber 24" Suspension 2027 - Junior Bike

The Trek Precaliber 24 Suspension combines an aluminium frame with 45mm front suspension and Shimano 8-speed gearing. Wide Bontrager tyres, easy-to-use twist shifting and child-sized components make it a practical choice for young riders exploring trails and cycle paths.
Key Features:
- Lightweight Alpha Silver aluminium frame with rack mounts and replaceable derailleur hanger
- Kids' suspension fork with 45mm travel to absorb bumps on uneven terrain
- Shimano Tourney 1x8 drivetrain with Revoshift twist shifter and 13-34T freewheel
- Alloy linear-pull brakes for straightforward stopping power
- 24in alloy wheels with Bontrager XR1 2.25in mountain bike tyres
- Designed for children aged 8–12 years, approximately 130–150cm tall
- Available with 0% APR finance
The Trek Precaliber 24 Suspension is a versatile children's mountain bike designed for young riders who enjoy exploring beyond smooth roads. Combining a lightweight aluminium frame, front suspension and Shimano 8-speed gearing, it provides a practical introduction to mountain biking while remaining suitable for everyday journeys and family rides.
Designed for children aged approximately 8–12 years, with a recommended height range of 129.5–149.8cm, the Precaliber 24 is aimed at youngsters developing their cycling skills and confidence. Whether riding to school, exploring local woodland trails or heading out with the family, it offers a balance of comfort, control and everyday practicality.
The frame is constructed from Trek's Alpha Silver aluminium, providing a lightweight and durable platform for regular riding. Aluminium construction helps keep the bike manageable for younger riders, making it easier to steer, accelerate and control on varied terrain.
The frame also features a replaceable derailleur hanger, which can be replaced if damaged without needing to replace the frame itself. Rack and kickstand mounts add further practicality, allowing parents to fit compatible accessories for everyday use.
A child-specific suspension fork provides 45mm of front travel, helping absorb bumps and vibrations from uneven surfaces. This makes the Precaliber 24 suitable for riding on gravel paths, woodland trails and rougher cycle routes.
The suspension helps reduce the impact of smaller obstacles through the handlebars, improving comfort and allowing young riders to concentrate on steering and maintaining control.
Shimano Tourney 8-speed gearing provides a useful range of gears for different riding conditions. The drivetrain features a Shimano Tourney TX80 rear derailleur, paired with a Revoshift twist shifter and an 8-speed 13-34T freewheel.
Twist shifting allows children to change gears by rotating the handlebar grip, providing a straightforward way to learn how different gears affect pedalling. An optical gear display also makes it easier to see which gear is selected.
The 32T ProWheel chainset features a single front chainring, simplifying gear selection by removing the need for a front derailleur. A double chainguard helps keep the chain in place and provides additional protection around the chainring.
The combination of a single front chainring and wide-range rear gearing makes the Precaliber 24 easier for younger riders to use, with lower gears available for climbing and higher gears for maintaining speed on flatter sections.
Alloy linear-pull brakes provide stopping power at both wheels. Their straightforward design makes them practical for regular use, while the hand-operated levers help children develop their braking technique as they become more confident riders.
The brakes also offer relatively simple maintenance and adjustment, making them a familiar choice for children's bikes.
The Precaliber 24 rolls on 24in aluminium wheels, paired with Bontrager XR1 tyres measuring 2.25in wide. The larger wheel size provides a suitable step up for children progressing from smaller bikes, helping them maintain momentum over uneven surfaces.
The Bontrager XR1 tyres feature a tread pattern designed for off-road riding, providing grip on gravel, dirt and smoother woodland trails. Their 2.25in width also offers additional cushioning and traction compared with narrower tyres, helping young riders feel more confident when exploring different surfaces.
The cockpit features a child-sized steel handlebar with 40mm rise, paired with a Bontrager aluminium stem. This arrangement provides a comfortable riding position and allows younger riders to maintain control when steering over uneven terrain.
A padded 24in children's saddle provides comfort for everyday rides, while the adjustable saddle height allows parents to set the bike up for their child's current size.
The Precaliber 24 Suspension is designed for children who have developed their basic cycling skills and are ready to explore more varied terrain. Its combination of front suspension, wider tyres and multiple gears introduces young riders to features commonly found on adult mountain bikes without adding unnecessary complexity.
For parents, the aluminium frame, replaceable derailleur hanger and practical mounting points make it a versatile option for regular use, whether that's riding to school, enjoying family cycling trips or exploring local trails.
With its 45mm suspension fork, Shimano 8-speed gearing and wide Bontrager tyres, the Trek Precaliber 24 Suspension gives young riders the confidence to explore further and develop their skills. It's a practical choice for children who enjoy cycling and want a bike that can handle everyday journeys alongside recreational off-road adventures.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Alpha Silver aluminium, rack and kickstand mounts, replaceable derailleur hangar, 135x5 mm QR |
| Fork | Kids' suspension, threadless steerer, 45 mm travel Kids' suspension, threadless steerer, 45mm travel |
| Headset | Adjustable ball bearing, threadless |
| Stem | Bontrager Approved alloy, 25.4 mm clamp, 15-degree rise, 60 mm |
| Bars | Kids' steel, 25.4 mm clamp, 40 mm rise |
| Front Brake | Alloy linear-pull // Alloy linear-pull Alloy linear-pull // Alloy linear-pull |
| Rear Brake | Alloy linear-pull // Alloy linear-pull Alloy linear-pull // Alloy linear-pull |
| Rear Mech | Shimano Tourney TX80 |
| Shifters | Shimano Tourney TX Revoshift 8-speed twist w/optical gear display |
| Speed | 8 |
| Rims | 24" 32-hole alloy |
| Front Hub | Steel, 100 mm bolt-on |
| Rear Hub | Steel |
| Front Tyre | Bontrager XR1, wire bead, 27 tpi, 24x2.25" |
| Rear Tyre | Bontrager XR1, wire bead, 27 tpi, 24x2.25" |
| Saddle | Kids' 24'' size, padded |
| Chainset | ProWheel alloy, 32T steel ring w/double guard |
| Bottom Bracket | Square taper, 68 mm, sealed cartridge |
| Chain | KMC Z8.3 |
| Cassette | Freewheel, 13-34, 8 speed |
| Pedals | Kids' Satellite, 9/16 thread |

Trek Precaliber Size Chart
| Size | Height cm | Height Feet / Inches |
|---|---|---|
| 12" wheel | 86 - 102 cm | 2'10" - 3'4" |
| 16" wheel | 99 - 117 cm | 3'3" - 3'10" |
| 20" wheel | 114 - 132 cm | 3'9" - 4'4" |
| 24" wheel | 130 - 150 cm | 4'3" - 4'11" |
| 26" wheel | 146 - 160 cm | 4'9" - 5'3" |
What size frame do I need if I am between sizes? - read here
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