Lambretta 200 Li GP SX TV RB24 240cc Mono Port Racing Cylinder Kit Ø70mm - AF Rayspeed
Single Exhaust Port

The RB24 cylinder kit has a 70mm bore and runs with a 62mm stroke crank making it 238cc. If fitted with a 62 x 116mm crank it will fit an unmodified 200cc crankcase.
The RB24 runs the single exhaust port instead of the triple layout of the RB22. In standard form this makes for a more mid range orientated version of the RB , but also lends itself to easy porting options.

aluminium
7 ports
Ø 70mm
2 piston ring(s)
w/o cylinder head
nikasil coated, with manifold and reed valve

One of the most advanced engine kits ever designed for the Lambretta.
The modern design of the 'RB' cylinders includes a number of updates for the Lambretta motor. The RB cylinder have a larger reed-valve assembly with the reed-petals arranged in two rows to provide an increased inlet cross-sectional area. To make effective use of the greater volume two 'Boysen-ports' are located between the reed-valve and the transfer ports. The overall port layout provides more volume than their predecessor, although there are slight differences between the cylinders in the range.

Kit consists of,
RB Cylinder,
Piston Complete,
Dual Reed Valve Assy,
Inlet Manifold,
Inlet,
Head And Exhaust Gaskets,
Six Inlet Manifold Bolts And Two Exhaust Studs.