Frog 78
Frog 78 Frog 78 Frog 78 Frog 78 Frog 78 Frog 78

Frog 78

Colour

Please select an option above

Price

£370(excluding delivery)

Weight

10 kg

Quantity

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This 26” wheel junior hybrid bike is a great multi-purpose bike suitable for juniors aged 13+ years old with a minimum inside leg of 78cm.

Wheel: 26” inch

- Lightweight but sturdy frame
- Tektro easy-reach brake lever
- Shimano rapid fire  8-speed gear shifter
- Patented Frog cranks for easier pedalling
- Quick release seat post for easy height adjustment 
- Two sets of tyres: hybrid and off-road
- Free 5 year warranty on frame and forks

Available colours: Neon Red, Neon Green, Dark Grey, Team Sky Black

Please be aware that the mudguards supplied with the bike can only be used with the Hybrid tyres. We are aware of the situation and are currently working to find a solution.

Approx Age 13+
Available colours Neon Red, Neon Green, Dark Grey, Team Sky Black
Weight 10 kg
Wheel size 26" (ETRTO/ISO 559)
Frame 6061 T6 heat treated, double butted aluminium alloy, seat tube 18" (465mm)
Fork 6061 T6 heat treated aluminium alloy
Crank set / Chainring Frog Bikes patented aluminium straight arm cranks with Frog Bikes double chain guard, 155mm, steel 34t chainring
Bottom Bracket Neco, square taper, 68/107.5, cartridge bearings
Pedals Frog Bikes eco-friendly rice husk composite pedal, w/reflectors, 9/16"
Front Hub Quando, aluminium, sealed hub, QR, 28 hole
Rear Hub Quando, aluminium, sealed hub, QR, 28 hole, Shimano type 8-speed free hub body
Cassette Shimano Altus, HG-31, 8-speed, 11-32t
Rear Derailleur Shimano Altus, M310, 8-speed
Chain KMC, 8-speed
Rim Aluminium, 26x1.5, double wall, machined braking surface
Seat post Aluminium, micro adjust, 27.2mm
Seat clamp Aluminium, QR
Headset Neco, 1"1/8 semi-integrated threadless, aluminium Frog Bikes top cap
Handlebar Aluminium, straight, 540mm
Stem Aluminium, 1"1/8, 60mm, 4 bolt clamp
Grips Soft rubber grip with lock ring, 30mm OD
Gear Shifter Shimano Alivio, M360, 8-speed, rapid fire
Brake Levers Frog Bikes’ designed Tektro easy reach brake lever
Brakes (F+R) Tektro 836AL, aluminium, linear pull
Saddle Frog Bikes junior specific saddle (medium), w/ steel rails
Tyres Primary Kenda K154, 26x1.5, hybrid, (ETRTO/ISO 40-559)
Tyres Secondary Kenda K1153, 26x1.75, MTB, (ETRTO/ISO 47-559)
Mudguards Full length, resin, black
Accessories box Bell, bike reflectors white/red, wheel reflectors orange/white, frame protector patches

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:

  1. Stand the child in socks against a wall
  2. Place a small book between their legs, as high as is comfortable
  3. Ask the child to move away and measure from the top of the book to the floor.
How to size a child for bike

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.
We recommend that you go to a local store who will have many of our bikes available so the rider can sit on a bike. You will get help and advice on sizing, and get on-going service, as well as support.  
PLEASE NOTE we always recommend that you buy your Frog bike from your local Frog store, who will build it for you and ensure the fit is right for your child.  Our bikes should always be built and checked by a qualified mechanic.

  Minimum inside leg in cm (in) Approx age Wheel Size Frame Size
Tadpole Mini 24cm 1-2 10"   
Tadpole 31cm (12") 2-3 12"  
Tadpole Plus 38cm (15") 3-4 14"
Frog 43 43cm (17") 3-4 14" 9"
Frog 48 48cm (19") 4-5 16" 9.5"
Frog 52s  52cm 5-6 20" 10"
Frog 52 52cm (20") 5-6 20" 10"
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" 
Frog Road/Track 58 58cm (23") 6-7 20" 11"
Frog Road/Track 67 67cm (26") 8-12 24" 14"
Frog Road/Track 70 70cm (27") 11-14 26" 17"
Frog MTB 62 62cm (24") 8-10 24" 12.5" 
Frog MTB 69  69cm (27") 10-12 26" 15"
Frog MTB 72  72cm (28")  13+  26"  16"

 

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. (These adjustments are easy to do and just need an allen key; instructions are in the manual).

BIKES

We have several delivery options for the bikes, depending on where you live and when you would like the bike.

Option 1. FREE to your local bike store (approx 1 week)

Option 2. £40 to whole of UK, excluding Channel Islands (approx 5 working days)

Option 3. £44.64 Mainland Europe, Azerbaijan, Bosnia Herzegovina, Canary Islands, Faroe Islands, Gibraltar (approx 10-13 days)

Option 4. £166.67 Hong Kong, Japan, Malaysia, Singapore, Thailand, UAE, China, India, Indonesia, Korea, Pakistan, Phillipines, Taiwan, Vietnam (approx 2-3 weeks)

Option 5. £189.39 Australia, Israel, New Zealand, Mexico, South Africa, Brazil, Egypt, Iraq, Morocco (approx 2-3 weeks)

Option 6. £208.33 Rest of world (approx 3 - 4 weeks)

ACCESSORIES

Accessories ordered on their own will be sent out using standard post, at a cost of £5.00 per order to UK, £10 per order overseas.

A Wheelbase (mm) 1088
B Seat tube angle (degrees) 74
C Head tube angle (degrees) 71
D Effective top tube (mm) 587
E Head tube length (mm) 170
F Chain stay length (mm) 435
G Seat tube length (mm) 465
H BB to Floor (mm) 295