Planet X Bikes
On-One Big Dog SRAM SX Mountain Bike
+ Add to Compare ✔ In ComparisonA great handling bike with a compliant steel frame, The Big Dog provides an intuitive ride for any trail. Equipped with 29er wheels and a 130mm fork, itll handle the rough while offering a lively character on smoother trails too. With plenty of clearance for wide tyres also, the Big Dog will be your perfect companion for any type of ride, whatever the terrain or conditions.
Massively adaptable, The Big Dog will instil fun, agility, and confidence to your ride. From the trial centre, to technical singletrack, and on to multi day bikepacking epics, The Big Dog is at home on all. The 65 degree head angle gives confidence on steep chutes. 444mm chainstays for technical stability. The 58mm BB drop keeps rider planted whilst ensuring ground clearance. Balanced stack and slightly longer reach figures offer versatility, from endurance adventures to hardcore hardtail territory. The 75-degree seat tube angle puts you above the crank for better climbing efficiency.
SX Eagle
The new SX Eagle is your entry point to the SRAM Eagle Ecosystem. Sharing many features with the rest of the Eagle Ecosystem like the proven SRAM 1x-specific X-HORIZON™ body design, it can accommodate up to 10-50T cassettes. Eagle is a lighter, simpler, more durable, and easier to use drivetrain.
Reliable, wide range, 1x gearing
An 11-50 cassette provides a huge, relible, gearing range with a single 32 tooth crankset utilising DUB technology. Enough range to ensure you can fly downhill or comfortably spin up the steepest climbs.
Level hydraulic brakes
The SRAM Level brake levels the playing field with power and reliability stuffed into a lightweight package. SRAM’s direct link design produces a solid, positive feel the second you squeeze the lever. It offers a no-nonsense solution to give you precise control.
| Product Type | Default Component |
| Fork | Rockshox Judy Silver TK 29" Boost Fork / 130mm / 15x110mm / Gloss Black / Crown Adjust |
| Frame | On-One Big Dog 29" Mountain Bike Frame / Slate Grey / Medium |
| Bar Tape / Grips | Selcof Knurl Grip / Black |
| Handle Bar | Selcof Enduro6 Riser Handlebar / 780mm |
| Saddle | San Marco Monza Start Wide Saddle / Black / Carbon Steel |
| Seat Post | Selcof Twelfty Alloy Inline Seatpost / 31.6mm |
| Stem | Selcof Hot Box Stem / 50mm |
| Tyre | Panaracer FireSport 29" Wire Bead Tyre / 2.35" |
| Bottom Bracket | SRAM DUB BSA Bottom Bracket / 73mm |
| Brake | SRAM Level Hydraulic Disc Brake / Front / 900mm / Post Mount 20mm Spacers |
| Brake | SRAM Level Hydraulic Disc Brake / Rear / 1600mm / 20 Post to IS |
| Frame Spare | M5 12mm Stainless Cage Bolt Black |
| Brake spare | SRAM Centreline Disc Brake Rotor / 160mm 6 Bolt |
| Brake spare | Avid Centreline Disc Brake Rotor / 180mm 6 Bolt |
| Brake spare | SRAM Hydraulic Hose Fitting Kit Includes Barb And Olive / Single Barb |
| Brake spare | SRAM Hydraulic Hose Fitting Kit Includes Barb And Olive / Single Olive |
| Cassette | SRAM PG-1210 Eagle 12 Speed Cassette / 11-50 |
| Chain | SRAM Chain PC NX Eagle / 126 Links / 12 Speed |
| Crank Set | SRAM SX Eagle DUB Crankset / 170mm / 32 Tooth / BOOST |
| Gear Levers | SRAM SX Eagle Trigger Shifter / 12 Speed Right |
| Head Set | Selcof Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black |
| Head Set | Selcof Semi-Integrated Cup Cartridge Bearing Headset |
| Rear Mech | SRAM SX Eagle AL Rear Mech / 12 Speed |
| Seat Clamp | Selcof Forged Alloy Bolt Up Seatclamp V3 / 35mm / 12mm / Black |
| Inner Tube | Panaracer Inner Tube / 29 inch / 1.75-2.35 inch / Presta 48mm |
| Wheel Pair | WTB I30 29er On Formula Boost 6 Bolt Wheelset / Shimano 11 Speed |
Frame
Using a 4130 frame and balanced geometry, Big Dog is our capable all-rounder ready to tackle any trail you fancy. Steel has always been the most compliant material to build frames with, keeping you fresh on the roughest of rides. Big wheels shod with 2.35 tyres maintain traction but also offer faster rolling speeds than smaller wheels. To put it simply, if your rides span from fast loops of your local singletrack to all-day epics, the Big Dog will fit the bill perfectly.
Groupset
SRAM 12 speed SX Eagle groupset offers a huge range of gears for getting you up any gradient. A clutch derailleur and narrow wide chainring mean the chain will be noise free in rougher terrain. This great drivetrain has been paired with SRAM's Level brakeset, top-flight stopping power combined with great lever ergonomics.
Wheels
WTB I30 29er Wheels provide fast rolling confidence. Tubeless compatible, the 30mm internal width gives you a wider tyre profile, offering more grip and control. Selcof finishing kit is used throughout the bike, including the wide and stable Enduro6 bars and a short 50mm stem for responsive yet controlled steering.
Fork
Rockshox Judy TK forks provide 130mm of plush travel, with a lockout included so you won't be losing out on the climbs. Being an air fork, you can change the air pressure to suit your weight and riding style too.
Finishing Kit
Selcof MTB: Provided by Selcof, the Enduro 6 handlebar is paired with lightweight and dependable alloy stem and seatpost or Selcof Watchtower dropper post adds capability. The Saddle is Italian made from Selle San Marco