| Frame | RMB Custom 6061 Double Butted Alu |
| Fork | Rock Shox Tora TK Coil |
| Front Travel | 100mm. Turnkey Lockout / Rebound |
| Rear Shock | N/A |
| Rear Travel | N/A |
| Head Set | Cane Creek A88 |
| Stem | RMB L7 7° x 80-120mm |
| Handlebar | RMB Five15 SL Ø31.8mmx 660mm x 5° Sweep |
| Brakes | Shimano BR-M445 Hydraulic Disc 160mm |
| Brake Levers | Shimano BL-M505 |
| Shifters | Shimano Deore Rapid Fire 9Spd |
| Gearing (FR) | Shimano Deore 31.8mm |
| Gearing (RR) | Shimano SLX |
| Cranks & Chainrings | Shimano M430 170-175mm 44/32/22T |
| Bottom Bracket | Shimano ES-25 Octalink |
| Pedals | RMB AM Flats |
| Hubs (FR) | Shimano M475 Disc |
| Hubs (RR) | Shimano M475 Disc |
| Cassette | Shimano HG-50-9 11-32T |
| Chain | Shimano HG53 |
| Spokes | Stainless |
| Rims | WTB SpeedDisc XC |
| Tires (RR/FR) | Maxxis Crossmark 2.1 |
| Seat Post | RMB L2B 27.2mm |
| Saddle | WTB Rocket V Comp |
| Size | 15” | 16.5” | 18” | 19” | 20.5” |
| Head Length | |||||
| Head Angle | 70.5° | 71.0° | 71.0° | 71.0° | 71.0° |
| Seat Angle | 74° | 74° | 73.5° | 73° | 72.5° |
| Seat Tube length | 381 | 419 | 457 | 483 | 521 |
| Horiz. Toptube Length | 540 | 565 | 585 | 600 | 620 |
| Headtube Length | 120 | 130 | 130 | 150 | 175 |
| Chainstay Length | 425 | 425 | 425 | 425 | 425 |
| BB Drop | 30 | 30 | 30 | 30 | 30 |
| Wheelbase | 1034 | 1054 | 1069 | 1079 | 1094 |
| Front-Centre | - | - | - | - | - |
| Standover Height | 717 | 734 | 756 | 777 | 799 |
| Fork Rake | - | - | - | - | - |
| Seat Tube (center-center) | - | - | - | - | - |
When we first started building bikes it quickly became apparent that traditional frame geometry wasn't going to cut it on the steep descents and tight turning singletrack of southern British Columbia. To help tame this rugged landscape we developed ST3 Geometry - or Sloping Top Tube Technology. A sloping top tube means increased frame stiffness and strength, and when things aren't going so well, more stand over height for crucial dismounting ease.
The frame layout creates a compact front end, giving increased agility in tight turning singletrack while providing increased stiffness for greater control in all conditions. It's also bomber construction: with a greater separation between the top tube/seat tube and seat tube/seat stay welds, frame stress is distributed over a larger area of the seat tube. Originated by Rocky Mountain and copied by others, ST3 delivers a better handling, stronger frame - the ride of a lifetime.
