125 YAMAHA DIRT BIKES

On Guard PitBull U-Lock: 3.5" x 5.5"

The On Guard PitBull U-Locks feature 8.4 Tons of pull strength plus higher quality lock cores.
Keyed locks include five European-style keys, (1 lighted), all tube QR mounting bracket
Pitbull has 8.4 Tons pull strength plus higher quality lock cores
Unique cylinder offers optimum resistance to picking and reinforced sleeve over crossbar for additional security
13mm ultra-hardened steel shackle provides maximum cut resistance
$2,251 anti-theft protection offer
Item Specifications
Lock Size3.5" x 5"
Bracket Incudedyes

I use only Kryptonite orange locks or better (the best is yellow).

I have a LS (long shackle) and an STD (standard). The STD locks the front wheel to the frame (it has quick release levers). The LS locks the frame to the bike rack. Its length allows for more versatility in locking situations. I then run a cable around the back wheel to the LS.

I actually recommend AGAINST using OnGuard locks. I also recommend against using Kryptonite's black and gray locks. Only orange and yellow are acceptable.

Contact me if you want to use a photo without watermarking.

A photo of my classmate's defeated (via angle grinder?) Kryptonite Kryptolok. His Surly Long Haul Trucker was stolen. The thief (or thieves) left everything but the bike.

You should buy the most expensive lock you can afford. Also, keep in mind the lock's price relative to your bike. For example, if you purchase a $1,000 bike, you should spend another $100 on a good locking solution.