Big Bore Cylinder Barrel Kit: Aprilia RS4 50 (2011-2017) Honda VTX1800 they're high quality ignition coil

they're high quality ignition coil replacement for your Monster S4R

We also stock the standard coils for the CB500 if you're looking for a like for like replacement of the original coils

To replace OEM: 30500-302-003 / 30500-302-014

3P6-82310-00 & 3P6-82320-00 amongst others

Big Bore Cylinder Barrel Kit: Aprilia RS4 50 (2011-2017) Honda VTX1800 they're high quality ignition coilBrand new big bore cylinder barrel kit to fit: Aprilia RS4 50 (2011 2017). This cylinder kit has been manufactured to upgrade the original top end on an Aprilia RS4 50 to 70cc for the years and models shown above. The kit includes the cylinder barrel jug, head, piston kit and gaskets. To upgrade D50B0 or D50B1 2 stroke engine from 50cc to 70cc. Chassis Prefix: ZD4TK000 ZD4VX ZD4TK0008 ZD4TK0000.