Trek Precaliber 20 7-Gang
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The 2022 ‘Precaliber 20 7-Speed’ model from Trek is a bicycle designed specifically for children, characterised by its robust and child-friendly components. The frame is made from Alpha Silver aluminium and is tailored to the needs of children, with a frame height of 20 inches. The maximum load capacity is 36 kg, whilst the bike itself weighs 10 kg.
The bike’s braking system comprises aluminium V-brakes at both the front and rear, which are specially adapted for children to ensure safe and reliable braking performance. The gear shifter is a Shimano Tourney RS45 with 7 speeds, operated via a twist grip shifter, which makes it easy to use.
The bike’s fork is a Kids suspension fork with a threadless steerer tube and 35 mm of travel, providing extra comfort when riding on uneven terrain. The pedals are Kids Satellite with a 9/16" thread, designed for child-friendly ergonomics.
The crankset consists of a ProWheel aluminium crank arm and a 32-tooth steel chainring, secured by a double chain guard. The crank arm is 127 mm long. The rear wheel is a SunRun freehub with a 14–28-tooth range and features a 7-speed cassette. Power is transmitted via a KMC Z7 chain, which is suitable for 7-speed cassettes.
The handlebars are made of steel, have a clamp diameter of 25.4 mm, a rise of 40 mm and a width of 560 mm. The grips are also child-friendly and are 125 mm wide. The stem is a Bontrager Approved aluminium model with a clamp diameter of 25.4 mm, a rise of 15 degrees and a length of 60 mm. The headset consists of adjustable ball bearings and is threadless.
The tyres are Bontrager XR1s with a wire bead and a size of 20 x 2.25 inches, with a TPI of 27. The saddle is padded and features an integrated seatpost with a handle to make carrying the bike easier. A side stand is also included.
The bike is priced at 414 EUR and bears the text "TREK PRECALIBER 20 7SP BOY". The packaging dimensions are 22 mm wide, 60 mm high and 108 mm long.
Tests & Reviews
Equipment
| Rear brakes | Aluminium, V-brake // Aluminium, V-brake Kids, Aluminium |
| Front brakes | Aluminium, V-brake // Aluminium, V-brake Kids, Aluminium |
| Frame | Alpha Silver Aluminium, 20-inch children’s frame |
| Shift levers | Shimano Tourney RS45, 7-speed twist shifter |
| Fork | Children’s suspension fork, threadless steerer tube, 35 mm travel |
| Crankset | ProWheel, aluminium, steel chainring (32 t.) with double chain guard, 127 mm long Square spindle, 68 mm, sealed cartridge bearing |
| Sprocket | SunRun, freehub, 14–28 teeth, 7-speed |
| Drive | KMC Z7, for 7-speed cassettes |
| Headset | Adjustable ball bearing, threadless |
| Handlebar | Kids, steel, 25.4 mm clamp diameter, 40 mm rise, 560 mm width |
| Grips | Kids, 125 mm wide |
| Stem | Bontrager Approved, aluminium, 25.4 mm clamp diameter, 15-degree rise, 60 mm |
| Saddle | Kids', padded, with integrated seat post and handle |
| Tires | Bontrager XR1, clincher, 27 TPI, 20 x 2.25 |
| Pedals | Kids Satellite, 9/16" thread |
| Kickstand | Side stand |