GPR Deeptone Duplex dual slip-on exhausts: 304 stainless steel silencers with link pipes

Deeptone Duplex specifications

Attribute	Value
Fitting	Dual slip-on with link pipes
Silencer	Deeptone Duplex, round, 80 mm (3.1 in)
Body	304 stainless steel, brushed, end caps included
Silencer length	BMW and Ducati kits: 300 mm (11.8 in)
Weight as listed	BMW kits: 1.4 kg (3.09 lbs). Ducati: 2.8 kg (6.17 lbs)
DB killers	Removable, in the box
Emissions	Non-compliant with the EPA limit, per every listing
Model years	2024 and newer

Deeptone Duplex or another Deeptone?

Line	Where it differs from the Duplex	Pick it if
Deeptone Inox	Same 80 mm brushed stainless body, mostly 370 mm long; slip-ons, dual slip-ons, full systems	you want one silencer on a Royal Enfield 450, or ride another make
Deeptone Nero	Black stainless steel; Royal Enfield 350s and Zontes	you want the black finish
Maxy Deeptone Cruiser	100 mm polished stainless steel silencers, 550 mm long	you ride the one Kawasaki it lists

Our take: the Duplex is the only Deeptone page that lists the BMW R1300 bikes and the Ducati Multistrada V4 V4S. On a Royal Enfield 450, choose the Duplex to swap both silencers and keep them matched, or the Deeptone Inox single slip-on to change just one.

Bikes with a Duplex kit

Bike	Kit	Notes
BMW R1300R R/RS	Dual slip-on, link pipes	300 mm silencers
BMW R1300GS	Dual slip-on, link pipes	300 mm silencers
BMW R1300GS Adventure	Dual slip-on, link pipes	300 mm silencers
Ducati Multistrada V4 V4S	Dual slip-on, link pipes	Works with the original side cases, per the listing
Royal Enfield Guerrilla 450	Dual slip-on, link pipes	Replaces both silencers
Royal Enfield Himalayan 450	Dual slip-on, link pipes	Replaces both stock silencers

Emissions class and DB killers

Every Duplex listing gives the same class: the kit does not reach the EPA emissions limit. Check local noise and emissions rules before you order.

The DB killers come in the box and lift out of the silencers.

Duplex kits by make, and the other Deeptone lines

The makes with the most Duplex kits lead the list, and every link goes to that make's GPR range:

• BMW
• Royal Enfield
• Ducati

More Deeptone silencers:

• Maxy Deeptone Cruiser
• Deeptone Nero
• Deeptone ATV
• Deeptone Inox

Deeptone Duplex FAQ

Which bikes does the Deeptone Duplex fit?

The BMW R1300R R/RS, R1300GS and R1300GS Adventure, the Ducati Multistrada V4 V4S, and the Royal Enfield Guerrilla 450 and Himalayan 450.

Are the link pipes in the box, and is the install bolt-on?

Yes, with both silencers, the DB killers, the brackets and the fittings. The listings describe an install without structural modifications.

Can I keep the original side cases on the Multistrada?

The Ducati listing says it works with them. The other listings are silent, so ask us.

Do the DB killers lift out of the silencers?

Yes. Check local noise rules first, since none of the kits reaches the EPA emissions limit.

How does the Duplex differ from the Deeptone Inox?

The Inox has the same 80 mm round body, mostly longer, and sells single slip-ons too.

What warranty is there?

GPR gives a 2-year manufacturer warranty.

Why riders order the Duplex here