470 / 1258
ENGINE
470
body
accessories
handlebar
& grips
cables &
levers
electrical
& ignition
engine
fuel &
intake
clutch
brakes
drive
steering &
suspension
bearings
tires
tools &
shop
exhaust
PISTONS
MODEL
YEAR VERSION
COMP.
RATIO
CYLINDER
BORE
(MM)
PISTON
DIAM. (MM)
DIS-
PLACE-
MENT
SIZE
OVER
STD
TOP END
PISTON
KIT
PISTON
KIT
REPLACE-
MENT
RING(S)
CIRCLIP
YAMAHA
CONTINUED
YZ 250F
14-15 FORGED HIGH COMP 14.4:1 77 76.95 250
-----
901953 903713 901675
YZ 250F
14-15 FORGED HIGH COMP 14.4:1 77 76.96 250
-----
901954 903713 901675
YZ 250F
14-15 FORGED HIGH COMP 14.4:1 77 76.97 250
-----
901955 903713 901675
YZ 250F
15-16 PRO HIGH COMP
13.8:1 77 76.96 250
-----
903644 903713 901675
YZ 250F
15-16 FORGED PRO BIG
BORE
14.4:1 80 79.96 270 3
-----
903645 903684 901675
YZ 250FX
15 FORGED REPLICA 13.5:1 77 76.95 250
-----
901959 903774 901675
YZ 250FX
15 FORGED REPLICA 13.5:1 77 76.96 250
-----
901960 903774 901675
YZ 250FX
15 FORGED REPLICA 13.5:1 77 76.97 250
-----
901961 903774 901675
YZ 250FX
15 FORGED HIGH COMP 14.2:1 77 76.95 250
-----
901950 903713 901675
YZ 250FX
15 FORGED HIGH COMP 14.2:1 77 76.96 250
-----
901951 903713 901675
YZ 250FX
15 FORGED HIGH COMP 14.2:1 77 76.97 250
-----
901952 903713 901675
YZ 250FX
15 FORGED BIG BORE 13.5:1 80 79.95 270 3
-----
901947 903676 901675
YZ 250FX
15 FORGED BIG BORE 13.5:1 80 79.96 270 3
-----
901948 903676 901675
YZ 250FX
15 FORGED BIG BORE 13.5:1 80 79.97 270 3
-----
901949 903676 901675
YZ 250FX
15 FORGED HIGH COMP 14.4:1 77 76.95 250
-----
901953 903713 901675
YZ 250FX
15 FORGED HIGH COMP 14.4:1 77 76.96 250
-----
901954 903713 901675
YZ 250FX
15 FORGED HIGH COMP 14.4:1 77 76.97 250
-----
901955 903713 901675
YZ 400F
98-99 FORGED REPLICA 12.5:1 92 91.93 400
-----
901173 903660 901939
YZ 426F
00-02 FORGED REPLICA 12.5:1 95 94.93 426
-----
901179 903775 901684
YZ 450F
03-05 FORGED REPLICA 12.5:1 95 94.93 450 STD
903454 -----
-----
-----
YZ 450F
03-05 FORGED REPLICA 12.5:1 95 94.94 450 STD
903455 -----
-----
-----
YZ 450F
03-05 FORGED REPLICA 12.5:1 95 94.95 450 STD
903456 -----
-----
-----
YZ 450F
03-09 FORGED BIG BORE 12.3:1 97 96.95 468 2
-----
-----
903776 901682
YZ 450F
03-09 FORGED BIG BORE 12.5:1 100 99.96 498 5
-----
901329 903686 901682
YZ 450F
03-09 FORGED RACE
13.5:1 95 94.93 450
-----
901212 903702 901682
YZ 450F
03-09 FORGED RACE
13.5:1 95 94.94 450
-----
901213 903702 901682
YZ 450F
03-09 FORGED RACE
13.5:1 95 94.95 450
-----
901214 903702 901682
YZ 450F
03-09 FORGED RACE
13.5:1
95 94.96 450
-----
901215 903702 901682
YZ 450F
03-09 FORGED REPLICA
12.5:1
95 94.93 450
STD
-----
901223 903777 901682
YZ 450F
03-09 FORGED REPLICA
12.5:1
95 94.94 450 STD
-----
901224 903777 901682
YZ 450F
03-09 FORGED REPLICA
12.5:1
95 94.95 450 STD
-----
901225 903777 901682
YZ 450F
03-09 FORGED REPLICA
12.5:1
95 94.96 450 STD
-----
901226 903777 901682
YZ 450F
03-09 FORGED BIG BORE 12.3:1 97 96.96 468 2
-----
901238 903698 901682
YZ 450F
03-09 FORGED BIG BORE 12.3:1 97 96.97 468 2
-----
901239 903698 901682
YZ 450F
03-09 FORGED BIG BORE 12.3:1 97 96.98 468 2
-----
901240 903698 901682
YZ 450F
03-09 FORGED BIG BORE 12.5:1 98 97.96 478 3
-----
901380 903714 901682
YZ 450F
03-09 FORGED BIG BORE 12.5:1 98 97.97 478 3
-----
901381 903714 901682
YZ 450F
03-09 FORGED BIG BORE 12.5:1 98 97.98 478 3
-----
901382 903714 901682
YZ 450F
06-09 FORGED REPLICA 12.5:1 95 94.93 450 STD
903457 -----
-----
-----
YZ 450F
06-09 FORGED REPLICA 12.5:1 95 94.94 450 STD
903458 -----
-----
-----
YZ 450F
06-09 FORGED REPLICA 12.5:1 95 94.95 450 STD
903459 -----
-----
-----
YZ 450F
10-13 FORGED REPLICA 12.5:1 97 96.93 450
903463 -----
-----
-----
YZ 450F
10-13 FORGED REPLICA 12.5:1 97 96.94 450
903464 -----
-----
-----
YZ 450F
10-13 FORGED REPLICA 12.5:1 97 96.95 450
903465 -----
-----
-----
YZ 450F
10-13 FORGED HIGH COMP 13.5:1 97 96.93 450
903466 -----
-----
-----