Complete Builds and Restorations | Engine and Chassis Work

NYC Norton’s focus is building high-performance street and racing bikes and their associated parts. Specializing in British Twins and Singles in various chassis, we can do a complete build to your specification or rework/restore your existing components. Tuning and performance upgrades, while maintaining rideability and reliability, is our main priority.  Wrapping it up in a beautiful package after all the hard work is done makes it all that much better.  We specialize in long-term projects, but encourage smaller scale rebuilds and modifications.

Some of what we do:

  • Commando Swingarm Spindle reinforcement: A lot of blame on ill-handing Commandos is focused on the Isolastics, when often the problem lies in the swingarm spindle wearing in its bores.  Our modification will pin the spindle against the bore, removing slop for good.  We can weld fittings to your existing swingarm for a permanent fix (requires repaint/powdercoat your components), or use clamping collars without marring your existing finish.  Send us your swingarm and engine cradle, and we return it with the modification in place.  $150.00
  • Gearbox Kickstart Shaft Seal Modification: Eliminate that leaky kickstart shaft.  Our modification inserts a lipped seal within your gearbox outer cover and virtually eliminates leaks.  Send us with your outer gearbox cover and we return it machined with your new seal intact, ready to fit.  $85.00
  • Tach Drive Seal Modification: Keep your right boot dry! Tach drive leaks are often hard to spot, causing oil to run over the side of the timing cover, or down the bottom end of the motor and appear like a leaky sump plug.  Our tach drive seal modification will virtually eliminate leaks in this area.  Send us your tach drive and we return it machined with the new seal intact, ready to fit.  $60.00


And more:

  • Complete or Partial Restorations
  • Complete engine rebuilding and restoration
  • Cylinder head stud helicoil and stud replacement
  • Crankshaft balancing/grinding
  • Piston-to-Cylinder clearance matching
  • Raise Compression and Squish Band machining
  • Complete Gearbox Overhauls
  • Isolastic Upgrades
  • Front-End Rebuilds/Modifications/Upgrades to Fork Internals: Installation of lightweight Roadholder components or Cosentino Fork Kits
  • Wheel Building
  • Custom Machining

Every job is different, and that’s what keeps it interesting.  Please call or email to discuss your project