Tired of welding bungs, destroying baffles, or otherwise finding a way to get an accurate exhaust gas sample for tuning purposes? Dynojet has the answer with its Stealth Extraction Interface Kit.

Discreetly gain access to an exhaust gas sample and accurately read your motorcycle’s air-fuel ratio on the dyno with Dynojet’s Stealth Extraction Interface Kit.

No need to weld extra 18mm lambda bosses in the exhaust.

This kit includes a drill bit, 50 pieces of consumables — bolts, washers and riv nuts — specialty bolts and billet manifold AFR block. 

To get started, drill a hole in the exhaust pipe and use the compression tool to install the riv nut, screw in the billet manifold interface and attach the O2 sensors.

• Simple way to get accurate Air/Fuel data on Dyno
• Perfect for individual cylinder mapping
• 50 pieces of consumables
• 2 billet AFR blocks