Description
Upgrade your Ducati Monster 821 with the Arrow Race-Tech slip-on system, offering improved sound, reduced weight, and a sleek racing profile. All versions share a stainless steel internal structure with a carbon end cap, providing excellent durability and performance while maintaining a refined exhaust note.
This system connects to the original collectors and requires a mid-pipe, available in either a catalytic homologated version or a lightweight racing joint.
Silencer features:
Stainless steel inner construction
Carbon fibre end cap
Satinless steel clamp mounting
Slip-on fitment for OEM collectors
Removable DB Killer
No CO or O₂ sensor ports
Body length: 350 mm
Inlet: 60 mm
Outlet: 50 mm
Weight (varies by model):
2.13 kg (4.70 lb)
2.63 kg (5.80 lb)
2.73 kg (6.02 lb)
Mid-pipe options:
71451KZ – Catalytic homologated mid-pipe (1.25 kg / 2.76 lb)
71451MI – Racing mid-pipe (0.55 kg / 1.21 lb)




