








Frog Mountain 72
£680
Frog MTB 72
Why buy a Frog MTB 72?
- – Lightweight 26-inch children’s aluminium mountain bike
- – Junior air suspension fork with lockout and damping control
- – Better control with oversized handlebars and stems
- – Easy-to-reach hydraulic brakes for uphill climbing
- – Shimano rapid-fire 9-speed shift lever
- – Increased pedalling efficiency with patented Frog cranks
- – Free 10-year extended warranty on the frame
- – Suitable for 13+ years with a recommended inside leg of 66cm-85cm
With the awesome Frog MTB 72 kids’ mountain bike, 13+-year-old multi-terrain adventurers will be able to hit the trails, pump tracks and streets in style. The lightweight aluminium MTB weighs just 11.5 kg and is equipped with hydraulic disk brakes, air suspension forks, and a 9-speed drivetrain to deliver the ultimate in off-road riding.
The Frog MTB 72 junior mountain bike, which is part of our Push The Limits range, is perfect for kids to make trail riding fun and easy. It’s kitted out with high-spec, age-specific components, designed for ease and comfort to help them build confidence and progress like a pro! They can experience smoother downhill control with the hydraulic disc brakes and impactful suspension forks, and tackle uphill climbs like a champ, thanks to the ultra-lightweight aluminium, child-specific frames.
This agile junior mountain bike also features an oversized handlebar and stem to reduce flex, giving your little shredder better control. It also comes with Kenda MTB tyres for maximum grip and comfort in all weather conditions and on all terrains. And our patented Frog cranks let kids pedal more efficiently, keeping them fast, nimble, and ahead of the game.
Custom kids’ mountain bike forks
For young lighter riders, we created custom suspension forks to ensure that our Push the Limits mountain bikes perform perfectly regardless of a rider’s weight. Learn more about how our forks are designed to work with a child’s weight and how to adjust the sag here >>
Get sized for cycling success
The Frog MTB 72 mountain bike is suitable for 13+ years with a recommended inside leg measurement of 66cm-85cm.
One of the biggest temptations is to buy a child’s first 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.
The data obtained during our child-specific frame design research has helped us create a helpful kids’ bike sizing app. View our bike sizing guide to discover the best-sized bike for your child or alternatively speak to one of our local stockists about our children’s bike range.
Product Safety Certifications | ISO 4210 and CPSC 1512 (CFR 1512) |
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Bike Weight | 11.5 kg (incl pedals) |
Frame | 6061 T6 heat treated, aluminium alloy, seat tube 16″ (415mm) |
Fork | Frog Bikes junior specific 26″ air suspension fork with lockout and damping control, 100mm travel <br> Our forks are manufactured to work specifically with a childs’ weight <a href=’https://www.frogbikes.co.uk/fork-tuning’>learn more here</a> |
Front Hub | KT-SN3F, high performance aluminium disc hub, sealed cartridge bearings, QR, 24 hole, 6 bolt |
Rear Hub | KT-SN3R, high performance aluminium disc hub, sealed cartridge bearings, QR, 24 hole, 6 bolt |
Cassette free wheel | Sunrace, CSM990 9AX, 9-speed, 11-40t |
Rim | Aluminium, 26″, double wall, disc-specific |
Seat Clamp | Aluminium, QR |
Headset | Neco, 1″1/8 semi-integrated threadless with sealed cartridge bearings, aluminium Frog Bikes top cap |
Stem | UNO, Aluminium, 1″1/8, 60mm, Oversized 4 bolt clamp |
Grips/Bar Tape | Soft rubber grip with lock ring, 30mm OD |
Brakes (F&R) | Tektro hydraulic disc brakes, 160/140mm rotor |
Tyres | Kenda K1134, 26″x2.1″, MTB, (ETRTO/ISO 53-559) |
Accessories Included | Bell, bike reflectors white/red, wheel reflectors orange/white, frame protector patches |
Crankset/Chainring | Frog Bikes patented aluminium straight arm cranks with double chain guard, 146mm, steel 32t chainring |
Bottom Bracket | Thun Shorty-ML-SL; square taper, 68/108/107.5 |
Pedals | Frog Bikes eco-friendly rice husk & plastic composite, w/reflectors, 9/16″ |
Chain | KMC, 9-speed |
Handlebar | UNO, Aluminium Oversized, 620mm |
Brake Levers | Tektro M276, junior specific, 2 finger hydraulic disc brake |
Saddle | Frog Bikes junior specific slimline saddle (medium) |
Seat Post | Aluminium, micro adjust, 27.2mm |
Gear Shifter | Shimano Acera SLM3000 Rapidfire Shift 9 Speed Lever |
Rear Derailleur | Shimano Alivio RD-M3100-SGS Shadow 9 Speed Rear Derailleur |
Frog Bikes
is a British company specializing in lightweight, high-quality bicycles designed specifically for children aged 1 to 14. Founded in 2013 by Jerry and Shelley Lawson, the company emerged from their personal quest to find suitable bikes for their own children. Collaborating with sports scientists at Brunel University and renowned bicycle engineer Dimitris Katsanis, Frog Bikes developed child-specific bike geometry, ensuring comfort and efficiency tailored to young riders.
In 2016, Frog Bikes relocated its manufacturing from China to a 120,000 sq ft facility in Pontypool, Wales, enhancing quality control and reducing lead times. The company has received support from the Welsh Government and was honored with the Queen’s Award for International Trade in 2018. Today, Frog Bikes operates in over 56 countries, with exports accounting for more than half of its turnover.
Committed to sustainability
Frog Bikes joined the Race to Zero campaign in 2021, aiming to reduce emissions by 50% by 2030 and achieve net-zero emissions by 2050. Their product range includes balance bikes, hybrid bikes, mountain bikes, and road bikes, all designed with lightweight aluminum frames and child-specific components. Notably, Prince Louis was seen riding a Frog balance bike on his first day of nursery in 2021, highlighting the brand’s popularity and reputation for quality