Kryptonite Keeper U-Lock - 4 x 8" Keyed Black Includes bracket CheckoutTitle=SRAM Rival D1 Quarq Wide 1x Power Meter Crankset 5" Offset 42 External Adjustments

5" Offset 42 External Adjustments Low Speed Compression Damping External Adjustments Lockout Threshold External Adjustments Rebound Damping Defined Color Black Positive Spring Air Axle to Crown Length 512 Front Axle 15mm Thru x 110mm Stanchion Diameter 30 Maximum Tire Width 81 S

Compatible with Hydra 6 bolt mountain rear hubshells - HG/XD drivers

then CNC machined aluminum

but it is pretty close and amazing

Kryptonite Keeper U-Lock - 4 x 8" Keyed Black Includes bracket CheckoutTitle=SRAM Rival D1 Quarq Wide 1x Power Meter Crankset 5" Offset 42 External AdjustmentsUpdated version 12mm hardened steel shackle and deadbolt with anti rotation design Includes side mount, snap in bracket High security disc style cylinder Includes 2 stainless steel keys Key Safe Program Security rating 5 10 Available Anti Theft Protection $500 TECH SPECS Internal Lock Size Imperial 4x8 Lock Type Key Internal Lock Size Metric 102x203mm Thickness In mm 12mm Bracket Side mount Primary Color Black