456 Summer Season = Super Slack Steel Steed.
Slacker head angle for pointing Long Travel Forks downhill. ISGC BB mount to keep that chain under control on Burms, Drops, Hucks, Air ETC...FAST. A 67.5 degree head angle places your centre of gravity a bit further back than on a regular 456, the difference being more guts and bigger balls on the knarly stuff.
Super subtle and soft, the 456 Summer Season has become one of our most popular rides. On tough all mountain terrain the custom butted DN6 steel frame rides steady and lets you go faster than just about any other hardtail I have ridden.
3 colour choices. None of them understated. But then again it is Summer and this is On-One...
Yorkshire rose headbadge makes it unsuitable for sale or use in lancashire.
| Frame Material | DN6 4130 chromoly steel |
| Approx. Frame Weight (g) | 2495 |
| Seatpost Size (mm) | 27.2 |
| Seat Clamp Size (mm) | 29.8 |
| Font Mech Clamp Size (mm) | 28.6 |
| Wheels | 26" x 2.5 tyres will just about fit, but we recommend 2.0 – 2.3" for best performance |
| Mudguards | Yes |
| Rack Mounts | Yes |
| Bottle Cage Bosses | 1 set |
| Fork Travel | 100 - 160mm MAX |
| Dropouts | Vertical |
| Bottom Bracket shell | 68mm, English threaded |
| S | M | L | XL | ||
|---|---|---|---|---|---|
| A | Head Angle (°) | 67.5 | 67.5 | 67.5 | 67.5 |
| C | Effective Top Tube Horizontal (mm) | 546 | 584 | 597 | 607 |
| D | Seat Angle (°) | 73 | 73 | 73 | 73 |
| E |
Seat Tube Length Centre to Top (mm) |
355 | 406 | 457 | 508 |
| F | Chainstay Length (mm) | 425 | 425 | 425 | 425 |
| G | Standover Height (mm) | 660 | 716 | 747 | 775 |
Geometry based on fully extended 140mm fork
| Rider Height | Inside Leg | Suggested Frame Size | Stem Length |
|---|---|---|---|
| 5'2" to 5'7" |
<29" | 14” | 60-80mm |
| 5′6″ to 5′10″ | 28”-31 | 16” | 60-80mm |
| 5′9″ to 6′1″ | 30”-34” | 18” | 60-80mm |
| 6′ to 6′4″ | 33”-37” | 20” | 80-105mm |
All frame size recommendations are approximate. A good fit will also depend on the correct choice of stem length, correct bike set-up for the rider and riding style.
Correct frame size choice can also depend on a rider’s torso and limb length.

Be green and save money use the cycle to work scheme
Free next day delivery in the UK by courier more info
Or visit our help section to find out about:
Bought the Lime green back in Feb 10 and have to say best £150 I have ever spent. So assured on the downs - very rarely do I use my full suss now. Does everything. Great fun. Great round trail centres.