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The Frog Road 58 bike is suitable for 6 to 7 years with a recommended inside leg measurement of 52cm-63cm.
The Frog Road 58 bike is suitable for 6 to 7 years with a recommended inside leg measurement of 52cm-63cm.
Frog Bikes

Frog Bikes 58 20 inch Unisex Kids Road Bike 2025 in Electric Blue

£449.00 £645.00 30% off
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Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

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Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Frog Bikes 58 20 inch Unisex Kids Road Bike 2025 in Electric Blue

Season:2025Sale

Brand:Frog Bikes

Code:L-FR58-EBL

The 20-inch Frog Road 58 kids’ bike is ideal for 6 to 7-year-olds who participate in road racing, cyclocross and triathlons, or who just simply love road riding.

This premium children’s road bike is the bike of choice for young, mult-discipline racers. It has a super-lightweight frame, weighing just 8.2kg helping children increase their distance, speed, efficiency and confidence for a high-performance ride.

This kids’ road bike comes with two sets of tyres, slick Kenda road tyres and Kenda cyclocross tyres with more grip, child-specific short drop handlebars for ease of handling and dual braking control, broadening the bikes capabilities for when in the road-riding position.

It is also equipped with 9-speed gears with Microshift short-reach brake levers making braking easier and more comfortable for smaller hands and an ergonomic slimline children’s saddle for a more agile riding experience. This road bike is perfect for kids looking for pace and efficiency while riding or racing.

Get sized for cycling success

The Frog Road 58 bike is suitable for 6 to 7 years with a recommended inside leg measurement of 52cm-63cm.

One of the biggest temptations is to buy a child's bike that they will grow into. However, this will likely have the opposite effect and put your child off bikes and cycling altogether! Another common mistake is to purchase a budget kids' bike but these models are often as heavy as a child which can lead to frustration at not being able to cycle. That’s why Frog bikes are lightweight and designed to specifically accommodate the anatomy of children.
Lightweight 20-inch road bike for road racing, cyclocross & triathlons

Narrow and short-drop child-specific handlebars for ease of handling
Dual braking control
Comfortable and efficient pedalling with patented Frog cranks
Youth-specific 9-speed gear shifters featuring FrogFit Technology®
Free 10-year extended warranty on frames and forks
Bell, reflectors and two sets of tyres included as standard
Suitable for 6 to 7 years with a recommended inside leg of 52cm-63cm

Key Features & Benefits

  • 1 Free set of tyres: Road tyres come fitted, but included are a set of 37mm knobly tyres for off road fun.
  • Shimano 9 Speed Drivetrain: Wide range of gears for even the youngest of road riders to tackle the undulations.
  • Tektro Orux 992AG Aluminium Cantilever Brakes: Ensure great stopping power with brake levers suitable for the smallest of hands.

Full Specification

  • Frame: 6061 T6 heat treated Aluminium alloy, seat tube 30cm (12")
  • Fork: 6061 T6 heat treated Aluminium alloy
  • Number of Gears: 9
  • Gear Shifters: Microshift SKBR492 9 Speed
  • Chainset: Frog Bikes Patented,114mm, Aluminium straight arm cranks, 32T chainring, black
  • Chainrings: 32T
  • Rear Cassette: Shimano 9 Speed 12-32T
  • Chain: KMC, 9-speed
  • Front Derailleur: N/A
  • Rear Derailleur: Microshift RD-R42S, Short Cage
  • Bottom Bracket: Neco, square taper, 68/107.5, cartridge bearings
  • Pedals: Wellgo R090, resin platform, single sided, toe clips (medium), reflectors, 9/16"
  • Rims: Aluminium double wall, deep section, machined braking surface
  • Front Hub: Quando, aluminium, sealed hub, QR, 24 hole
  • Rear Hub: Quando, aluminium, sealed hub, QR, 28 hole, Shimano type free hub body, 9-speed
  • Front Tyre: Kenda K-1018, 20"x1"1/8, Road, (ETRTO/ISO 28-451) with Kenda, K1153 20"x1"3/8, Cyclo-Cross included
  • Rear Tyre: Kenda K-1018, 20"x1"1/8, Road, (ETRTO/ISO 28-451) with Kenda, K1153 20"x1"3/8, Cyclo-Cross included
  • Brakes: Tektro Orux 992AG Aluminium Cantilever
  • Handlebars: 6061 aluminium, custom drop bar, 320mm
  • Handlebar Grips or Tape: Black bar tape
  • Headset: Neco, 1"1/8 semi-integrated threadless, front brake hanger, Frog Bikes top cap
  • Stem: Aluminium, 1"1/8, 38mm, 4 bolt clamp
  • Saddle: Frog Bikes, child specific slimline saddle (medium), steel rails
  • Seatpost: Aluminium 300mm
  • Accessories: Kenda, K1153 20"x1"3/8", Cyclo-Cross, (ETRTO/ISO 37-451) tyres. Bell, bike reflectors white/red, wheel reflectors orange/white, paint plasters, frame protector patches
  • Weight: 8.20kg
  • Inside Leg or Age Range: 6-7 Years with a recommended inside leg of 52cm-63cm

Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Sizing Chart for Frog Kids Bike

Frog bikes are sized by leg length rather than age, as this is the most reliable way of getting the right size of bike for each child.

Frog Bike ModelBeginner Minimum Inseam (cm)Confident Minimum Inseam (cm)Maximum Inseam (cm)Recommended Age*Wheel Size*Frame Size*
First Pedal Bikes
Frog 3838cm (15")36cm (14")41cm (16")3 - 414"9"
Frog 4444cm (17")40cm (16")53cm (21")4 - 516"9.5"
Frog 4747cm (18")43cm (17")59cm (23")4 - 618"9.5"
Hybrid Bikes
Frog 5353cm (21")50cm (20")65cm (26")5 - 720"11"
Frog 6161cm (24")57cm (22")74cm (29")8 - 1024"12"
Frog 6767cm (26")63cm (25")76cm (30")10 - 1226"14"
Frog 7474cm (29")69cm (27")91cm (36")12 - 1426"18"
City Bikes
Frog City 5353cm (21")49cm (19")65cm (26")5 - 720"11"
Frog City 6161cm (24")57cm (22")74cm (29")8 - 1024"12"
Frog City 6767cm (26")63cm (25")81cm (32")10 - 1226"14"
Mountain Bikes (MTB)
Frog MTB 6262cm (24")58cm (23")70cm (28")8 - 1024"12.5"
Frog MTB 6969cm (27")63cm (25")75cm (30")10 - 1226"15"
New Road/Gravel
Road/Gravel 5353cm (21")50cm (20")64cm (25")5 - 720"
Road/Gravel 6161cm (24")58cm (23")74cm (29")8 - 1024"
Road/Gravel 6767cm (26")63cm (25")86cm (34")10 - 1326"
Road Bikes (rim brake)
Frog Road 5858cm (23")52cm (20")63cm (25")6 - 720"11"
Frog Road 6767cm (26")62cm (24")74cm (29")8 - 1224"14"
Frog Road 7070cm (28")67cm (26")84cm (33")11 - 1426"17"
Track Bikes
Frog Track 5858cm (23")52cm (20")63cm (25")6 - 720"11"
Frog Track 6767cm (26")62cm (24")74cm (29")8 - 1224"14"
Frog Track 7070cm (28")67cm (26")84cm (33")11 - 1426"17"


Warranty Information for Frog:

Frog Bikes' offer a standard warranty for 2 years on all frames, forks, parts & paintwork. Suspension forks come with a standard warranty of 2 years and are not included in the Warranty Plus offer.
Frog offer a FREE extended warranty of 10 years on frames, handlebars, stems, seat posts, cranks and forks (excluding the suspension forks on MTBs) if you complete and submit the Warranty Plus application form within 28 days of purchase. This extended warranty is non-transferable.
For full warranty policy please visit frogbikes.co.uk

Sizing Information

Sizing Chart for Frog Kids Bike

Frog bikes are sized by leg length rather than age, as this is the most reliable way of getting the right size of bike for each child.


Current ModelsMinimum Recommended inside leg in cm (inches)Maximum Recommended inside leg in cm (inches)Approx ageWheel SizeFrame Size
Tadpole Mini23cm (9")31cm (12")1-210"
Tadpole31cm (12")38cm (15")2-312"
Tadpole Plus36cm(14")44cm(17")3-414"
Frog 4036cm(14")43cm(17")3-414"9"
Frog 4440cm(16")51cm(20")4-516"9.5"
Frog 4743cm(17")54cm(21")4-618"9.5"
Frog 5350cm(20")62cm(24")5-720"11"
Frog 6157cm(22")74cm(29")8-1024"12"
Frog 6257cm(22")65cm(26")8-1024"12"
Frog 6963cm(25")70cm(27")10-1226"14"
Frog 7367cm(26")76cm(30")12-1426"16"
Frog 7872cm (28")83cm (33")13+26"18"
Frog City 5353cm(21")62cm(24")5-720"11"
Frog City 6161cm(24")70cm(27")8-1024"12"
Frog City 6767cm (26")76cm (30")10-1226"14"
Frog Road/Track 5852cm(20")59cm(23")6-720"11"
Frog Road/Track 6762cm(24")70cm(28")8-1224"14"
Frog Road/Track 7067cm(26")79cm(31")11-1426"17"
Frog MTB 6258cm (23")65cm (26")8-1024"12.5"
Frog MTB 6963cm (25")70cm (28")10-1226"15"
Frog MTB 7266cm (26")81cm (32")13+26"16"
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