ARROW Link Pipe Central 'No-Cat' INOX Stainless KTM 790 & 890 (see details below)

The Arrow central link pipe (part 71719MI) replaces the standard catalytic mid-section on the KTM 790 and 890 Duke and Adventure, the Husqvarna Norden 901 and the CFMOTO 800 MT. It is built from INOX stainless steel and is designed to sit between the standard headers/collector and the silencer, so it can be run with an Arrow slip-on or with the original silencer retained.

It suits riders who want to shed the weight and restriction of the standard catalyst section while keeping the rest of the exhaust system as-is, and it is a common first step for owners planning to add an Arrow slip-on later. Removing a catalytic converter affects emissions compliance, so this pipe is intended for closed-course or competition use unless permitted where you ride — please check your model, variant and year against the fitment list before ordering.

• Arrow part number 71719MI
• Non-catalytic (de-cat) central link pipe replacing the standard catalyst mid-section
• Made from INOX stainless steel, AISI 304 grade
• Lighter than the standard catalysed central section
• Designed to connect to the standard headers/collector at the front
• Compatible with Arrow slip-on silencers made for these models, or the standard silencer can be retained
• Fits KTM 790/890 Duke and Adventure, Husqvarna Norden 901 and CFMOTO 800 MT Sport/Touring

Confirm your exact model, variant and year against the fitment list before ordering — the 790 and 890 Duke and Adventure use different silencer and link pipe combinations across model years.
Only work on the exhaust when the system is completely cold, and support the silencer so it cannot drop while the central section is removed.
Inspect the exhaust gaskets, springs and clamps as you go and renew any that are distorted, flattened or corroded; reusing tired sealing rings is the most common cause of joint leaks.
After fitting, run the bike up to temperature, let it cool, then re-check all clamps, springs and hanger fasteners — joints commonly settle after the first heat cycle.
Re-check the exhaust joints and mounts periodically, particularly after off-road riding or fitting luggage or panniers that load the rear of the system.
Clean with warm soapy water and a soft cloth, then dry thoroughly; avoid abrasive pads, steel wool and acidic wheel cleaners, which will pit stainless steel.
Remove oil, grease and fingerprints before the first ride, as they bake into the surface once the pipe gets hot.
Heat tinting or a gold/blue tint near the welds and hottest sections is normal for stainless steel and is not a defect.
Never hose or spray cold water onto a hot pipe, and let the system cool before washing the bike.
Removing the catalytic converter changes the emissions equipment fitted to the motorcycle; check your local road-use and roadworthy requirements, and be aware it may affect insurance and compliance.