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Whyte 403 2019 (26 Inch Wheels) Kids Mountain Bike in Petrol Blue

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Product Details

Whyte 403 2019

Genuine Whyte MTB for young riders from 8-12ish. Its 13 inch frame and 26 inch wheels also make the Whyte 403 perfect for shorter adults looking for a trail-ready mountain bike.

  • With its hydroformed alloy frame made for an SCR (single chain ring) transmission, and optimised for UK riding conditions with a progressive geometry (68˚ seat/74˚ head tube angle) to keep the rider centered and in control, the Whyte 403 boasts the key features we love about Whyte mountain bikes - see blog.
  • Its Shimano Altus transmission delivers a superb range of gears in a simplified 1x9 format via its 11-36 cassette, its single chainring (no double shifting required) and its single Shimano Altus gear mech.
  • Why one-by is the way forward see blog.
  • A chainstay-mounted chain tensioner and the narrow/wide chainring help eliminate any risk of unshipping the chain.
  • Stopping power is equally impressive, thanks to the Whyte 403's Tektro M-275 hydraulic disc brakes. See our hydraulic disc brakes' blog.
  • Compared with a 24 inch wheel bike for younger riders, the Whyte 403's WTB 26x2.1 front / 26x1.95 inch rear tyre combo offers significantly improved traction, rollover and speed potential.
The 403 in Whyte's own words

'We've broken the mould with our kids' bikes. By putting 26” wheels on a kids' MTB we've given a boost in performance similar to an adult switching to a 650b/27.5” Trail Hardtail. More confidence, more control and easier riding.

A specific lightweight tubeset - not just sawn off versions of adult pipes - shrinks, climbs and puts a tailwind into every ride. We've downsized our maximum confidence Trail geometry and fitted air sprung forks that properly work for lighter pilots so their rides are full of thrills not spills. Shimano single ring transmissions gives simple, instinctive, sequential shifts but still have the gears for every climb and a chainset sized for shorter legs.

We've even stripped down the spoke count on the 26in wheels to 28 and fitted the same grippy front, fast rear tyre combinations as our full sized trail bikes, so they're fast and fun, and make every adventure easier.

For 2018 Whyte has specced a Shimano 9-speed trigger shifter, which will help with the transition to an adult bike.

The 403 also comes with Whyte's own Get-a-Grip seat post clamping system. This easy to use clamp allows the post to be raised or lowered on the trail, even with small cold hands.
We've downsized everything except the performance so you can start them right with a Whyte.'

Kids Bike Size Guide >

Shop All Kids Bikes >

Shop All Kids 26 Inch Bikes

Don't forget A Helmet

Technical Specifications

Whyte 403 2018 
Frame6061 Alloy, Hydro Formed T6 Aluminium, Multi Butted, SCR, Get A Grip Seat Clamp System, Internal Cable Routing with BBX and Chainstay Post Mount Dropouts
ForkSR Suntour XCR, 100mm Travel, Hydro Lock-out, Air Spring, Adjustable Rebound, Post Mount
HeadsetFSA No.10, Semi Integrated, 1 1/8” Caged Bearings
Rear HubAlloy, Cup & Cone, Double Seal, 28 Hole
Front HubAlloy, Cup & Cone, Double Seal, 28 Hole
Spokes2.0mm, Black Stainless with Brass Nipples
RimsWhyte Trail-403, 28 Hole
Front TyreWTB Trail Boss Comp 26” x 2.25”
Rear TyreWTB Trail Boss Comp 26” x 2.25”
Shift LeversShimano Altus SL-M2000, Trigger Shifter, 9 Speed
Rear DerailleurShimano Altus RD-M2000-SGS, 9 Speed
CassetteSunrace CSM90, ED Black 11-36, 9 Speed
ChainKMC 9 Speed
CranksetAlloy 6061, 28T Narrow wide Chainring, Single guard, 152mm Crank Length
Bottom BracketSquare Interface, Cartridge Bearings, 73mm
SeatpostWhyte 6061 Alloy, 15mm Offset, 30.9mm x 300mm, 2 Bolt Clamp
SaddleWhyte Jr Mid Custom
BarWhyte 6061 Alloy, 25mm Rise, 31.8mm, 660mm Wide
StemWhyte Alloy, 35mm Extension
GripsWhyte Lock-on V Grip
Front BrakesTektro M-275, Hydraulic, 160mm Rotor
Rear BrakesTektro HD-M275, Hydraulic, 160mm Rotor, Internal Routing
Brake LeversTektro HD-M275
PedalsFibre reinforced Composite Platform


Our suppliers reserve the right to change specifications and prices without notice. Edinburgh Bicycle Cooperative will do all it can to maintain prices and specifications on this web site, however we do reserve the right to change specifications and prices without notice. Similarly, despite the wonders of modern computers, it is realistic to expect the colour of any item bought to differ subtly from the image online.