STANDARD BIG BORE KIT

We recommend to use 12000rpm's or less, when using the Normal CLUTCH or the Normal FLY WHEEL. (If you use over 12000rpm's, The CLUTCH and the CRANK SHAFT could break.)
It's possible to upgrade to 104cc, 108cc BIG BORE and the ULTRA/SPL BIG BORE. (ALL ITEMS ARE PRODUCED BY KITACO)
1. STD VALVE SET (IN / EX)
Diameter of VALVE Face is
IN : 25mm
EX : 22mm
Diameter of Stem is 5.5mm
2. STD HEAD INHALE PORT (22.0mm I.D.)
Shaped Original-Filet.
3. STD HEAD EXHAUST PORT (18.0mm I.D.)
Shaped Original-Filet.

BIG BORE KIT (A)


MONKEY & GORILLA
Fno,Z50J-1000001~1186300
(S-TYPE CRANK SHAFT)
Fno,Z50J-1300017~1323946
(S-TYPE CRANK SHAFT)
Fno,Z50J-1323947~1510400
(L-TYPE CRANK SHAFT)
DAX (6V)
Fno,ST50-1000001~6299999
(S-TYPE CRANK SHAFT)
Fno,ST50-6300022~6346265
(L-TYPE CRANK SHAFT)
CD50
Fno.CD50-1100001~ 1330600
(L-TYPE CRANK SHAFT)
CHALY
Fno.CF50-1000001~ 2999999
(L-TYPE CRANK SHAFT)

*HOW TO DISTINGUISH "L" FROM "S" STROKE UP CRANK SHAFT*
Fly wheel.B is thicker than Fly wheel.A. Therefore Fly wheel.B's AXLE is longer and will support thicker fly wheel. Check your model, and if yours is A, it would be Short-TYPE. Otherwise looks B, it would be Long-TYPE.
ATTENTION FOR EXCHANGING OIL PUMPS

Case of Bike : A
BIG BORE KIT(85/88cc)
BIG BORE KIT(104/108cc)
SUPER OIL PUMP
SUPER OIL PUMP KIT-6V
(op) 331-1013300
5,000 Yen
Nothing needs to be changed use this part
SUPER OIL PUMP KIT-6V
(op) 331-1013300
5,000 Yen
The SPINDLE SET should be changed when the SUPER OIL PUMP KIT is installed
ULTRA OIL PUMP
ULTRA OIL PUMP SET-6V
(op) 331-1013500
6,800 Yen
The SPINDLE SET should be changed when the ULTRA OIL PUMP is installed
ULTRA OIL PUMP SET-6V
(op) 331-1013400
5,000 Yen
The SPINDLE SET and DRIVE SHAFT should be changed when the ULTRA OIL PUMP is installed

BIG BORE KIT (B)


MONKEY & GORILLA
Fno,Z50J-1600008~1805927

ATTENTION FOR EXCHANGING OIL PUMPS

Case of Bike : B
BIG BORE KIT(85/88cc)
BIG BORE KIT(104/108cc)
SUPER OIL PUMP
SUPER OIL PUMP KIT-6V
(op) 331-1013300
5,000 Yen
Nothing needs to be changed use this part
SUPER OIL PUMP KIT-6V
(op) 331-1013300
5,000 Yen
The SPINDLE SET should be changed when the SUPER OIL PUMP KIT is installed
ULTRA OIL PUMP
ULTRA OIL PUMP SET-6V
(op) 331-1013500
6,800 Yen
The SPINDLE SET should be changed when the ULTRA OIL PUMP is installed
ULTRA OIL PUMP SET-6V
(op) 331-1013400
5,000 Yen
The SPINDLE SET and DRIVE SHAFT should be changed when the ULTRA OIL PUMP is installed

BIG BORE KIT (C)


MONKEY (12V) / GORILLA (12V)
Fno,Z50J-2000001~/AB27-1000001~
MONKEY BAJA
ALL
DAX (12V)(AB26)
ALL
JAZZ
ALL
MAGNA50
Fno,AC13-1000010~
CD50/BENLY50S/CL50
Fno,CD50-1500001~
CHALY
Fno,CF50-3000031~
MONKEY.R / RT
ALL
MOTRA
ALL
SUPER CUB.50
PRESS CUB.50
LITTLE CUB
Fno,C50-8000001~ 9501323
Fno,C50-9600001~ 0095210
Fno,C50-0200001 ~
Fno, AA01-1000001~
GIORCUB
Fno, AF53-1000001~
*
*** CUB - NOT POSSIBLE TO PUT ON THE LEG SHIELD
*** MONKEY BAJA - NOT POSSIBLE TO PUT ON THE UNDER GUARD