
FROG BIKES
FIRST PEDAL BIKE 40CM
$459.99$369.99
The Frog Bikes 40 is the perfect first-pedal bike. It's all-aluminum frame, fork and componentry makes this little bike extremely lightweight compared to most other kids bikes out there - making it perfect for chasing the bigger kids in the park.
Suitable for riders aged from 3-4 years old with a minimum inside leg height of (you guessed it) 40cm.
- Frog Bike - 40cm frame
- ONLY AVAILABLE FOR LOCAL PICKUP IN TORONTO
- Questions? Book a consultation with one of our Kids Bike experts
- High quality, very lightweight Aluminum Frame and Fork
- Easy reach Tektro brakes with adjustable levers perfect for small hands
- The locking headset means the handlebars have a steering limiter, which is safer for learners
- 14" wheels
- Soft handlebar grips
- Warranty: 5 years on the frame and fork, 2 years on all other parts
- EZ Trainer Stabilizer wheels available
- Weight: 6.3 kg / 13.9 lbs
Approx Age | 3-4 |
Colour | Tour De France Yellow, Electric Blue, Green, Orange, Pink, Red, Spotty |
Weight | 6.3 kg or 13.9 lbs |
Fork | Aluminium Fork |
Frame | Aluminium 9" Frog 40 Frame |
Wheel Size | 14" |
Head Set | Locking headset, 27mm |
Bottom Bracket | 110.5mm Sealed Bottom Bracket |
Crank Set | Alloy 102mm Black |
Chain Ring | Steel 32 Teeth (old spec 34T) |
Chain Guard | Integral Black Chain Guard. Full chain guard supplied on new spec only. |
Brakes | Tektro C310 Aluminium V Brake Black |
Brake Levers | Tektro Aluminium JL352-RS V Brake Lever Black |
Length of top tube | 330mm (horizontal distance from seat post to stem: 343mm) |
Stem | Frog Bikes Aluminium 38mm Stem |
Handlebar | Frog Bikes Aluminium Little Handlebars Width 420mm (old spec 440mm) |
Grip | Frog Bikes Specific Slim Grips |
Saddle | Frog Bikes Saddle Size:201*136mm, Black, adjustable rails for better fit |
Seat Post | 200mm long aluminium 27.2 (old spec with Quick Release) |
Pedal | Plastic with Ball Bearings and Reflectors |
Bell | Bell |
Rim | Aluminium 14" x 1.5" 20 holes Black(Weight:200g) |
Hubs | Aluminium 20 holes |
Tyres | Kenda 14" x 1.5" hybrid tyres |
Tubes | Kenda 14" x 1.5" with Schrader Valves |
Right Hand Gear Shifter | Single Speed |
Rear Derailleur | n/a |
Free Wheel | 18T Copper |
Reflectors | White & Red front & rear reflectors, 2x wheel reflectors (in both white and orange) (old spec white wheel reflectors only) |
Frame Protectors | Clear stickers for chainstay and frame - new spec only |
Average inside leg in cm (in) | Approx age | Wheel Size | Frame Size | |
Tadpole Mini | 24cm (9") | 1-2 | 10" | |
Tadpole | 31cm (12") | 2-3 | 12" | |
Tadpole Plus | 38cm (15") | 3-4 | 14" | |
Frog 40 | 40cm (16") | 3-4 | 14" | 9" |
Frog 44 | 44cm (19") | 4-5 | 16" | 9.5" |
Frog 47 | 47cm (19") | 4-6 | 18" | 9.5" |
Frog 52 | 52cm (20") | 5-6 | 20" | 10" |
Frog 53 | 53cm (20") | 5-7 | 20" | 11" |
Frog 55 | 55cm (22") | 6-7 | 20" | 11" |
Frog 62 | 62cm (24") | 8-10 | 24" | 12" |
Frog 69 | 69cm (27") | 10-12 | 26" | 14" |
Frog 73 | 73cm (29") | 12-14 | 26" | 16" |
Frog 78 | 78cm (31") | 13+ | 26" | 18" |
In contrast to many kids' bikes, Frog bikes are sized by the leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age.
Please take the time to measure the rider’s inside leg.
It’s easy to measure:
- Stand the child in socks against a wall
- Place a small book between their legs, as high as is comfortable
- Ask the child to move away and measure from the top of the book to the floor, in inches.
Once you have measured the inside leg, use this table to find the right size of bike for your child. Note we give the MINIMUM inside leg length for each bike, with the saddle at its lowest setting. At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry - Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.
Of course all children have different length arms and torsos too, so to ensure a comfortable riding position, the handlebar height can be tailored, and saddles can be slid backwards and forwards on their rails.

So Frog set about re-designing kids' bikes, creating a light but strong aluminum frame, and hand-picking components that offer a high performance without compromising the weight. The bikes are much easier to pedal due to a unique crank design from the renowned bicycle engineer Dimitris Katsanis (of Team GB Olympic fame). The new design reduces the Q-factor (the space between the pedals), allowing children to push more directly down when cycling, converting more of their energy into motion. Only Frog applies this level of rigour to the design of kids' bikes. All Frog Bikes are built in Cardiff, Wales.
A | Wheelbase (mm) | 664 |
B | Seat tube angle (degrees) | 75 |
C | Head tube angle (degrees) | 71 |
D | Effective top tube (mm) | 340 |
E | Head tube length (mm) | 75 |
F | Chain stay length (mm) | 276 |
G | Seat tube length (mm) | 170 |
H | BB to Floor (mm) | 165 |
