Trek Precaliber 20 7-speed - Purple Abyss

Shop the 2026 Trek Precaliber 20-inch 7-Speed kids’ bike in Purple Abyss for sale in South Africa at Biket — the official Trek Bikes online store. Built with a lightweight frame, 7-speed gearing, and kid-friendly design, the Precaliber helps young riders gain confidence and control. Buy online today with fast nationwide delivery in South Africa.

OVERVIEW

The Precaliber 20 7-Speed is a versatile kids' bike for young adventurers. It has a lightweight frame and quality components like a front suspension fork, 7-speed gearing and hand brakes that are perfectly sized to better fit small riders. For kids aged 6-8, between 129.5 - 149.8 cm (45-52˝) tall.

The tech you get

A strong, lightweight aluminium frame, a simple 7-speed drivetrain that's easy for kids to handle, and a front suspension fork to smooth out bumps on the road and trail. Plus, it has a kickstand, mounts for a rear rack and a saddle with an integrated handle that can be swapped out for an integrated rear light mount.

The final word

When you're young, just being outside is an adventure. Precaliber's rugged styling makes it the perfect vessel for young explorers. They may pretend to be scaling dangerous mountains or escaping terrible beasts, but with a high-quality build and components, you'll always have peace of mind.

Why you'll love it

1. Intuitive twist shift makes it easy for kids to switch gears when their terrain changes
2. You can replace the saddle's integrated handle with an integrated light mount to boost visibility on family adventures and solo excursions
3. This bike is hand-me-down heaven: it's built to last, so younger siblings can inherit this bike and it'll still feel like new
4. Like all Precaliber bikes, the frame is lower so it's easier for kids to stand over and hop on and off
5. Investing in a kids' bike from an established bike brand is worth it – Trek kids' bikes are designed and assembled by people who know bikes.

Frame	Alpha Silver Aluminium, 20" kids' frame size
Fork	Kids' suspension, threadless steerer, 35 mm travel
Max compatible fork travel	50mm

Wheels

Hub front	Steel, 100 mm bolt-on
Hub rear	Steel, 26T
Rim	Alloy 20", 32-hole, Schrader valve
Tyre	Bontrager XR1, wire bead, 27 tpi, 20x2.25"
Max tyre size	20x2.25"

Drivetrain

Shifter	Shimano Tourney RS45, 7 speed twist
Rear derailleur	Shimano Tourney TY300
Crank	ProWheel alloy, 32T steel ring w/double guard, 127 mm length
Bottom bracket	Square taper, 68 mm, sealed cartridge
Cassette	SunRun freewheel, 14-28, 7-speed,
Chain	KMC Z7, 7-speed
Pedal	Kids' Satellite, 9/16 thread
Max. chainring size	1x: 30T

Components

Saddle	Kids' padded, integrated seat post, with handle
Handlebar	Kids' steel, 25.4 mm clamp, 40 mm rise, 560 mm width
Grips	Kids' grip, 130mm width
Stem	Bontrager Approved alloy, 25.4 mm clamp, 15-degree rise, 60 mm
Head set	Adjustable ball bearing, threadless
Brake	Alloy linear-pull
Brake lever	Kids', alloy

Accessories

Kickstand	Kickstand

Weight

Weight	10.71 kg / 23.62 lbs
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider,and cargo) of 36 kg (80 lb).

 

Sizing

size-table

Size	Rider Height
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"

Geometry

All measurements provided in cm unless otherwise stated.

Sizing table

Frame size number	Wheel size	A — Seat tube	B — Seat tube angle	C — Head tube length	D — Head angle	E — Effective top tube	F — Bottom bracket height	G — Bottom bracket drop	H — Chainstay length	I — Offset	J — Trail	K — Wheelbase	L — Standover	M — Frame reach	N — Frame stack
20	20" kids'	25.5	72.0°	8.5	70.0°	44.5	23.8	3.0	37.2	4.2	5.3	86.5	47.6	31.2	40.6