Rivera Engineering STAGE 8 EXH BOLT LOCK KIT Exhaust Accessories Stage 8 Exhaust Bolt Lock Kit66-84 Shovelhead - 1081-0001 Street American V-Twin &gt; EXHAUST &gt; Exhaust Accessories &gt; Stage 8 Exhaust Bolt Lock Kit Application: 66-84 Shovelhead Rivera Engineering Stage 8 Exhaust Bolt Lock Kit 1081-0001.