Mason 140
$70.00
World's Lightest Sold Secure Diamond U-Lock!
Unique triangular 17 mm crossbar for best strength/weight ratio. Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately.
Hear what our customer has to say about his Mason 140
Mason 180
$75.00
World's Lightest Sold Secure Diamond U-Lock!
Unique triangular 17 mm crossbar for best strength/weight ratio. Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately
Hear what our customer has to say about his Mason Lock
Mason 220
$80.00
The Widest of its kind! PATENTED pentagonal crossbars, 15.3 mm hardened steel. Stronger than any rounded crossbars, Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately
Mason 300
$85.00
The Widest of its kind! PATENTED pentagonal crossbars, 15.3 mm hardened steel. Stronger than any rounded crossbars, Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately
U-Lock Mounting Bracket
$15.00
A Mounting Bracket for attaching the lock to your bike's frame
Fits any of our U-Locks
Fits a wide spectrum of frame widths
Enables endless mounting positions
