Do either of the front rotors have a 'Reluctor Ring'?
The relector ring is part of the ABS and it looks similar to what is in the photo.
There's a sensor that reads the pulses off this ring.
I check at the Harley Davidson Website the specs for the 2011 Tri-glide and ABS is not available.
Specs:
MSRP
Vivid Black $30,499
Color Option $31,299
Two-Tone Option $31,799
Custom Color Option N/A
Special Edition Color Option N/A
Security Option $370
Wheel Option N/A
ABS Option N/A
Reverse Option Standard
Cruise Control Option Standard
California Emissions $200
Freight $695
Power Pak™ (103 engine, Security, and ABS) N/A
Security Package (Security and ABS) N/A
No ABS Indicator on cluster.
Indicator Lamps 8 High Beam, running lights, front fender running lights, directional light bar, low oil pressure, engine diagnostics, cruise control, speakers, accessory, security system (optional), 6 speed, low fuel warning, reverse enabled.
Braking system.
Brakes 32 mm, 4 piston fixed front, 31.75mm single piston floating rear
Parking Brake Lever actuated dual parking brake.
No ABS mentioned here either.