Engine Capacity	24 cc	30 cc	45 cc
Cyl. Centre to Rear- “A”	70 mm - 2¾ in	97 mm - 3¾ in	120 mm - 4¾ in
Tail Pipe Dia./ Length	D 15 mm - L 75 mm	D 15 mm - L 60 mm	2 off D 10 mm - L 105 mm
Cyl. Centre to Exh. Side- “B”	55 mm - 23/16 in	85 mm - 33/8 in	80 mm - 31/8 in
Can Length “C”	115 mm - 4½ in	145 mm - 5¾ in	160 mm - 6¼ in
Can Diameter	40 mm - 15/8 in	50 mm - 2 in	50 mm - 2 in
Weight	140 g - 5 oz	170g - 6 oz	290g - 10 oz