KYMCO Racing G5/G6 big bore cylinder 
The  forging piston waste time to produce and need high skill to make, but it can use for a long time and more hard than usually one.
( G5  オーバーサイズシリンダー )
G5 cylinder = G6 Cylinder =Racing cylinder =downtown 125 cylinder = =Movie S cylinder
Include cylinder body,Piston,Piston ring, Pin, gasket and G ring.
Original Size : 54 x 54.5(124.8 cc )
G5-01055  Big bore 55 mm cylinder ( 129.5 cc )
G5-01056  Big bore 56 mm cylinder ( 134.2 cc )
Original Size : 59 x 54.5(149 cc )
G5-01059  Big bore 59 mm cylinder 
G5-01059-f  Big bore 59 mm cylinder+forging 
G5-01061  Big bore 61 mm cylinder (159.3 cc )
                    Taida’s G5 61 mm cylinder don’t cut the engine block.
G5-01061-f Big bore 61 mm cylinder (forging)
From 63 mm start to cut case for G5 125.
G5-01063     Big bore 63 mm cylinder (169.9 cc )
G5-01063.5   Big bore 63.5 mm cylinder (172.6 cc)
G5-01063.5-f Big bore 63.5 mm cylinder(forging)CBR
G5-01065     Big bore 65 mm cylinder (180.8 cc )
G5-01066     Big bore 66 mm cylinder (186.5 cc )
G5-01066-f   Big bore 66 mm cylinder (forging)
G5-01067-f   Big bore 67 mm cylinder (forging, 192.1 cc )
G5-01070     Big bore 70 mm cylinder (209.7 cc)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Especificación detallada
KYMCO Racing G5/G6 big bore cilindro
La duración de porducir el pistón forjado es más larga, así que el forjado es más duradero que el fundido.
G5 cilindro = G6 Cilindro =Racing cilindro
Incluye cilindro, pistón, anillo de pistón, Pin, juntas y anillos de forma G
Tamaño original : 54 x 54.5(124.8 cc )
G5-01055     Big bore 55 mm cilindro ( 129.5 cc )
G5-01056     Big bore 56 mm cilindro ( 134.2 cc )
Tamaño original : 59 x 54.5(149 cc )
G5-01059     Big bore 59 mm cilindro
G5-01059-f   Big bore 59 mm cilindro+forjado
G5-01061     Big bore 61 mm cilindro (159.3 cc )
El G5 61 mm cilindro de Taida no necesita cortar el bloque del motor.
G5-01061-f   Big bore 61 mm cilindro (forjado)
Los siguientes necesita cortar el bloque(desde 63 mm) para G5 125
G5-01063      Big bore 63 mm cilindro (169.9 cc )
G5-01063.5    Big bore 63.5 mm cilindro (172.6 cc)
G5-01063.5-f  Big bore 63.5 mm cilindro(forjado)CBR
G5-01065      Big bore 65 mm cilindro (180.8 cc )
G5-01066      Big bore 66 mm cilindro (186.5 cc )
G5-01066-f    Big bore 66 mm cilindro (forjado)
G5-01067-f    Big bore 67 mm cilindro (forjado,192.1 cc )
G5-01070      Big bore 70 mm cilindro (209.7 cc)