The tuning experts at MMW have been developing and producing special high end motor tuning components for Vespa and other PIAGGIO two-stroke engines for a number of years now. Their CNC machined reed-valve manifold assemblies are capable of raising the pulse rate of any Vespa tuner! The additional length of the inlet is ideal for high revving motor set ups and the shifted power band also produces more torque. The enlarged inlet cross section allows a higher inlet gas speed. Combined with its gas-flowed design the cylinder receives enormous amounts of fresh fuel charge every stroke of the piston!
Aluminium reed-valve manifold, made by MMW, CNC milled,
Kit includes a rubber connector but no reed-valve. We recommend the reed-valve produced by either YAMAHA RD350 or TASSINARI, both with four reed-petals. The crankcase requires no extra material to be added through welding, the original motor-stud openings can also still be used, kit includes all fixing materials.
Ø 30mm, fits: (connecting rubber SIP 0135)
MIKUNI TMX 27-30mm
Dell`Orto PHBH 28-30mm/ VHST 24-28mm/ VHSH 30
KOSO/ Serie Pro 28-32mm Ø36mm
Ø35mm. fits: (connecting rubber SIP0136)
MIKUNI TMX 32-35mm
Dell`Orto VHSB 34mm
KOSO/Serie Pro 28-32mm Ø39mm
SIP- TIP : Do not forget to order a TASSINARI four petal reed-valve (#27422000) and liquid or paper gasket material.