Mason 140

$70.00

World's Lightest Sold Secure Diamond U-Lock!

Unique triangular crossbar profile for best strength/weight ratio. Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately.

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Mason 180

$75.00

World's Lightest Sold Secure Diamond U-Lock!

Unique triangular crossbar profile for best strength/weight ratio. Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately

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Mason 220

Coming Soon $80.00

The Widest of its kind! PATENTED pentagonal hardened steel crossbar profile - Stronger than any rounded crossbars, Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately  

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Mason 300

Coming Soon $85.00

The Widest of its kind! PATENTED pentagonal hardened steel crossbar profile - Stronger than any rounded crossbars, Double deadbolt locking mechanism for protection against twist attacks. *Mounting Bracket sold separately  

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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

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