Cylinder-head for Vespa Largeframe scooters with SIP-BFA Engine.

Our SIP-BFA crankcases open the door to hitherto unprecedented performance. In particular so in combination with the cylinder kits BFA developed for these engines. These have been designed from the ground up, including the cylinder heads to complement them.

• Central spark plug
• O-Ring sealed
• 8 bolt design for centring and secure warp free mounting

The heads come with everything that you may expect from a designed cylinder head of a tuning kit. They are machined to recess into the barrel’s bore for centring. The 8 bolt design guarantees that the head is held down in place, no matter what, to prevent leaks. In addition to that they are sealed with an O-ring. To make the combustion as efficient and homogeneous as possible the spark plug sits in the centre of the combustion chamber.

Conclusion: to be used either as a spare part, or for tuning experiments. First choice as original part for the SIP-BFA cylinder kits.

The Best Setup - Our SIP-Tip:

• As standard these heads only fit the BFA 225 and 306 cylinder kits.
• Make sure to order the correct thread length, i.e. DENSO IW 31 Art.-No. 88571000 or NGK BR10EIX Art.-No. NGKBR10EIX
• Use a torque wrench to fit the head free of tension: Art.-No. 20837516.