Big Dog K-9 vs MuZ Mastiff (2011)

Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Big Dog K-9stacks up against the MuZ Mastiff. Numbers pulled from manufacturer spec sheets — click either bike for the full review.

Spec comparison

SpecBig Dog K-9MuZ Mastiff
Model year20112011
Price$29,900$28,900
Engine1917 cc1917 cc
Weight318 kg321 kg
Seat height24 mm24 mm
Fuel capacity4.4 L4.6 L
Fuel typepetrolpetrol
Transmission6-speed6-speed
Front brakesSingle disc. 4-piston Diff boreSingle disc. 4-piston Diff bore
Rear brakesSingle disc. 4-pistonSingle disc. 4-piston
TiresMH90-21 / 300/35-R18 MH120-21 / 300/35-18

Big Dog K-9 vs MuZ Mastiff — which should you buy?

Picking between the Big Dog K-9 and the MuZ Mastiff usually comes down to the numbers you care about most. On paper, the Big Dog K-9 brings its published horsepower in a 318 kg package, while the MuZ Mastiff counters with its own power figure at 321 kg. On price, the MuZ Mastiff has the lower MSRP.

Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: