Link KnockBlock G4+ c34 Manufactured from high quality ABS

Manufactured from high quality ABS plastic

a vital measurement for engine operation

Part # ARP 260-4704

NOTE: Sold as a PAIR NOTE#2: Bearings are NOT included however the hubs are designed to be used with the standard bearings NOTE#3: Grease trap/ABS ring are NOT included

Nissan Silvia S13 & 180SX

Link KnockBlock G4+ c34 Manufactured from high quality ABSThe G4+ KnockBlock is an essential tool for tuning and can aid in the early detection of incorrect ignition timing, lean air fuel mixtures and mechanical issues. It is used it with ear buds, headphones or noise cancelling ear muffs and features special filtering to allow you to listen in and detect knock early. Listen to one or two knock sensors Special filtering design improves signal to noise ratio Can be used with ear buds, headphones or noise