Chase Race Series Expert Race Bike (2027) in black, featuring blue handlebar grips, a padded seat, and thin tires, displayed at a slight angle on a white background—an ideal entry-level race bike for aspiring riders.

A Chase Race Series Expert Race Bike (2027) with a blue and magenta frame, black tires, and blue handlebar grips is shown against a white background.

A Chase Race Series Expert Race Bike (2027) featuring a gradient frame in purple, pink, and blue, with black tires and a black seat, is shown on a white background.

Here’s a rewritten version using your product data: Detailed bicycle frame geometry chart created for the Chase Race Series Micro 18 Race Bike (2027)—a dedicated 18-inch BMX race bike for kids—including a clear diagram and a comprehensive table outlining exact measurements for five different frame sizes. The chart lists specifications such as TT, CS Min, LR, AF, SA, HT, SPL, BBH, WB, and wheel size.

Description

Give your emerging rider the best start in their BMX racing career by getting a Chase Race Series Expert under them. If your rider is just getting their first serious race bike, then this mini is the perfect sized race bike for them.

Chase know a thing or two about winning and this experience flows all the way down to their smaller bikes, and entry level bikes like the Race Series. With an all aluminium frame and chromoly forks, it's built from the same race winning materials as the bigger bikes in the range and means that it'll handle anything your young racer can throw it at.

Add in double-walled alloy rims and this Chase Expert will take on biggest, baddest tracks with ease and when your rider is ready to move up to the next sized bike, the build quality and reputation that the Chase name brings ensures that this race rig will be ready to pass down to the next rider coming up in the family, or passed onto another young shredder.

Available in two contrasting colour schemes, the skittles version will suit your little extrovert, while the quiet achiever will pick the black/grey Chase to let their riding do the talking out on track. Either way, they will love their first race bike.

Specifications

Length: 19.75 Inch Frame
Frame: Expert 19.75" Top Tube 6061 T6 Alloy, Integrated Head Tube, 1-1/8", Water Decals
Fork: Full Cr-mo, 1-1/8" Steer Tube
Headset: Integrated IS 42/42, 1-1/8", Sealed Bearing
Handlebars: Cr-mo 5.75" Rise, Diameter 22.2mm, 24.5" Wide, 8° Back Sweep & 2° Up Sweep
Grips: 130mm Soft Single Ply Without Flange
Stem: Top Load, 1-1/8" Steer Tube, Diameter 22.2mm, Length 53mm, 6061 T6 Alloy
Bottom Bracket: Euro Square 113mm Sealed Bearing
Chainring: 39 Tooth 5 Bolt 110mm 1/2"x3/32" 3mm Steel
Cranks: 3 Pieces Crank 155mm Alloy Arm, Cr-mo Chain Ring Bolts / Nuts
Pedals: Platform Nylon 9/16"
Chain: KMC Z6 1/2"x3/32"
Cog: Freewheel 16 Tooth 1/2"x3/32"
Front Hub: 28H, Double Contact Seals Bearing, 3/8" Axle/Nuts
Rear Hub: 28H, Double Contact Seals Bearing, 3/8" Axle/Nuts
Spokes: 14 Gauge, Steel
Nipples: 16mm, 14 Gauge, Brass
Front Rim: Double Wall Alloy 28H 1-3/8" Presta Valve
Rear Rim: Double Wall Alloy 28H 1-3/8" Presta Valve
Front Tyre: Arisun XLR8 1-3/8" Wire Bead
Rear Tyre: Arisun XLR8 1-3/8" Wire Bead
Tubes: 20''*1-3/8" Presta Valve
Brakes: V-Brake 95mm, Mini Reach 2 Fingers Lever
Seat: Expert/Pro Combo Alloy Post/Nylon Seat
Post: Expert/Pro Combo Alloy
Seat Clamp: 28.6mm Alloy 1 Bolt
Weight: 8.6 Kg (without pedals)

Assembly information

Your bike ships mostly assembled in the box. Finishing it takes most people 10 to 20 minutes with basic tools, and the video above walks through every step.

Fit the handlebars and line them up with the front wheel
Fit the front wheel, pedals and seat post
Check the brakes and tyre pressure before the first ride

Tools: Allen key set and a 15mm, 17mm or 19mm spanner for the pedals and axle nuts (bikes can vary between these three sizes). A socket is needed if installing pegs.

Rather have it done? Ask us about extra assembly before you order, or any local bike shop can finish the build for a small fee.