Kink 2025 Curb Bike - Cobalt Blue 20"

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Kink 2025 Curb Bike - Cobalt Blue

The Kink Curb 20" BMX is a great all around first time bike or for someone upgrading from a 16" or 18" bike. The Curb BMX bike is the perfect bike for riders to start their BMX journey, learn new tricks and progress their riding.

What parts are on the Kink Curb BMX bike?

The Kink Curb BMX bike features a durable High Tensile Steel frame and forks with tapered legs which are connected with an 1 1/8" Threadless headset.

This 20" kids BMX bike has many high end components including a tried and trusted Mission Function semi-sealed rear 9 tooth, 14mm cassette hub. The front hub is the Mission Reserve loose ball front, both hubs are laced onto Mission X7 rims with 36 spokes. These are running on Mission Tracker 2.4" wide tyres with a smooth tread pattern designed for all different types of riding.

The Mission Triumph tubular BMX cranks are made from Chromoly and are 170mm long. These are fitted to the frame using an American style loose-ball bottom bracket. Although this doesn't have sealed bearings it very rarely needs adjusting. Completing the drive chain is a Mission Breach 25 tooth sprocket and Kink Hemlock plastic pedals.

Up top there's Kink Ace flangeless grips on 8.75" rise Kink K875 High Tensile Steel bars which are clamped to a Mission Control Top Load stem. The Mission Token brake lever connects to the Mission Cease V2 rear brake via a Mission L3 Linear cable to give you good stopping power.

Ensuring you have a comfortable ride is the Mission Warsaw Combo seat attached to a 25.4mm standard sized BMX seat post.

What age is the Kink Curb 20 inch suitable for?

We would recommend this bike for riders that are between 150cm/4'11" to 160cm/5'3" tall. Based on UK data this would typically be for a child between the ages of 12 and 14 years old. This is only an approximate guide and you may find riders that are slightly shorter or taller can competently ride this bike.

If you are looking for smaller BMX bike check out the Kink Kicker 18" and if you're looking for a 20" BMX bike with a slightly longer top tube check out the Kink Launch bike.

What type of BMX riding is the Kink Curb suitable for?

This Kink Curb BMX bike is designed for all round riding, so whether it's ramps, street, dirt, concrete parks or pump tracks this bike will do it all. This 20" BMX bike is ideal for either a first entry into BMX or for someone that's out grown a 18" BMX bike.

What else should know before buying a Kink Curb BMX?

This Kink BMX bike includes both front and rear brakes. The rear brake, cable and lever are already installed. The rear brake lever is installed on the left side of the handlebars as opposed to how it's shown in the photos. This bike will require some basic assembly prior to riding which will include putting the handlebars in the stem, fitting the front wheel, pedals and seat post. The minimum tools you will require are: 15 & 17mm spanner, 5mm and 6mm Allen keys.

For a full guide on how to assemble this bike click here to view the Kink BMX pdf. Please note that this guide applies to all Kink BMX bikes rather than this specific model.

What are the technical specifications of the Kink Curb 2025 BMX?
FRAME Kink Curb 100% Hi-Ten Steel PEDALS Kink Hemlock
FORK Kink Lance 100% Hi-Ten Steel Tapered Fork Legs CHAIN Mission 410
BARS Kink T875 8.75" 100% Hi-Ten Steel SPROCKET Mission Breach 25T
GRIPS Kink Ace, Thrust Barends SEAT Mission Warsaw Combo
STEM Mission Control TL 50mm SEAT POST Mission Combo Steel Post
HEADSET Standard 1 1/8" Threadless SEAT CLAMP Mission Slim Clamp
BRAKE LEVER Mission Token FRONT HUB Mission Reserve Unsealed 3/8" Axle
BRAKE CABLE Mission L3 Linear REAR HUB Mission Function Semi-Sealed Cassette 14mm
BRAKES Mission Cease V2 DRIVER 9T
CRANKS Mission Triumph 3pc Tubular Chromoly 170mm - 8 Spline RIMS Mission X7
BOTTOM BRACKET Unsealed American 19mm TIRES Mission Tracker 2.4"
PEGS  N/A WEIGHT  27lb 2oz

What is the frame and fork geometry of the Kink Curb 20"?
Toptube Length 20"
Chainstay Length 13.25"
Headtube Angle 74.5°
Seattube Angle 71°
Standover Height 8.5"
Bottom Bracket Height 11.6"
Fork Offset 32mm

Standard delivery service 1-2 days

Orders under £50 are £3.95

Orders over £50 are Free


  • We will do our best to ship all ‘in-stock’ orders that are placed before 2pm on the same day (excludes weekends).
  • Highlands, Islands and off-shore UK destinations should allow extra time because of their remote locations.
  • All orders placed during the weekend will be dispatched the following working day.



All UK orders are dispatched with Royal Mail or Fedex and can be fully tracked & traced online.


Please contact us within 2 days of delivery listing any missing or damaged items.

Before returning any items you must first contact us to obtain an RMA (Return Merchandise Authorisation). The RMA will help us to speed up the return process. 


Please contact us directly to find out the warranty policies for specific brands and products as these may vary from product to product. When contacting us regarding warranty issues please include pictures to assist the return procedure.

RETURN ADDRESS: Backyard Returns, c/o Seventies BMX Distribution, 51 Woodland Vale Road, St Leonards on Sea, East Sussex, TN37 6JJ

Email: info (at)

Phone: 01424 857239

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