ENGINE
350
body
accessories
handlebar
& grips
cables &
levers
electrical
& ignition
engine
fuel &
intake
clutch
brakes
drive
steering &
suspension
bearings
tires
tools &
shop
exhaust
APP.
YEAR VERSION
DESCRIPTION
COMP.
RATIO
CYL.
BORE
(MM)
PISTON
DIAM.
(MM)
DIS-
PLACE-
MENT
SIZE
OVER
STD
TOP END
REBUILD
KIT
PISTON
KIT RINGS
WRIST
PIN
CIR-
CLIP
YAMAHA
CONTINUED
WR 250F 05-13 Forged Big Bore Big Bore Piston kit; +7mm makes 297cc. Kit
includes: Piston, rings, pin, clips
12.5:1 84 83.96 297
7
-----
901317 901609 901040 901939
WR 400F 98-00 Forged Replica Replica Piston kit; Kit includes: Piston, rings, pin,
clips
12.5:1 92 91.93 400
-----
901173 901644 901045 901684
WR 426F 01-02 Forged Replica Replica Piston kit; Kit includes: Piston, rings, pin,
clips
12.5:1 95 94.93 426
-----
901179 901647 901016 -----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and cam chain.
12.5:1 95 94.95 450 STD
903261 -----
-----
-----
-----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and cam chain.
12.5:1 95 94.94 450 STD
903262 -----
-----
-----
-----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and cam chain.
12.5:1 95 94.93 450 STD
903263 -----
-----
-----
-----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and wrist pin bearing
when applicable.
12.5:1 95 94.95 450 STD
903114 -----
-----
-----
-----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and wrist pin bearing
when applicable.
12.5:1 95 94.94 450 STD
903113 -----
-----
-----
-----
WR 450F 03-06 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and wrist pin bearing
when applicable.
12.5:1 95 94.93 450 STD
903112 -----
-----
-----
901682
WR 450F 03-12 Forged Big Bore Big Bore Piston kit; +2mm makes 468cc. Kit
includes: Piston, rings, pin, clips
12.3:1 97 96.95 468
2
-----
901940 901649 901041 901682
WR 450F 03-14 Forged Race
High Compression Piston kit;13.5:1, single
compression ring piston, kit includes: Piston,
rings, pin, clips
13.5:1
95 94.93 450
-----
901212 901615 901041 901682
WR 450F 03-14 Forged Race
High Compression Piston kit;13.5:1, single
compression ring piston, kit includes: Piston,
rings, pin, clips
13.5:1
95 94.94 450
-----
901213 901615 901041 901682
WR 450F 03-14 Forged Race
High Compression Piston kit;13.5:1, single
compression ring piston, kit includes: Piston,
rings, pin, clips
13.5:1
95 94.95 450
-----
901214 901615 901041 901682
WR 450F 03-14 Forged Race
High Compression Piston kit;13.5:1, single
compression ring piston, kit includes: Piston,
rings, pin, clips
13.5:1
95 94.96 450
-----
901215 901615 901041 901682
WR 450F 03-14 Forged Replica Replica Piston kit; 12.5:1 Kit includes: Piston,
rings, pin, clips
12.5:1
95 94.93 450
STD
-----
901223 901646 901041 901682
WR 450F 03-14 Forged Replica Replica Piston kit; 12.5:1 Kit includes: Piston,
rings, pin, clips
12.5:1
95 94.94 450 STD
-----
901224 901646 901041 901682
WR 450F 03-14 Forged Replica Replica Piston kit; 12.5:1 Kit includes: Piston,
rings, pin, clips
12.5:1
95 94.95 450 STD
-----
901225 901646 901041 901682
WR 450F 03-14 Forged Replica Replica Piston kit; 12.5:1 Kit includes: Piston,
rings, pin, clips
12.5:1
95 94.96 450 STD
-----
901226 901646 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +2mm makes 468cc. Kit
includes: Piston, rings, pin, clips
12.3:1 97 96.96 468
2
-----
901238 901649 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +2mm makes 468cc. Kit
includes: Piston, rings, pin, clips
12.3:1 97 96.97 468
2
-----
901239 901649 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +2mm makes 468cc. Kit
includes: Piston, rings, pin, clips
12.3:1 97 96.98 468
2
-----
901240 901649 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +5mm makes 498cc Kit
includes: Piston, rings, pin, clips
12.5:1 100 99.96 498
5
-----
901329 901589 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +3mm makes 478cc, 12.5:1
Kit includes: Piston, rings, pin, clips
12.5:1 98 97.96 478
3
-----
901380 901622 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +3mm makes 478cc, 12.5:1
Kit includes: Piston, rings, pin, clips
12.5:1 98 97.97 478
3
-----
901381 901622 901041 901682
WR 450F 03-14 Forged Big Bore Big Bore Piston kit; +3mm makes 478cc, 12.5:1
Kit includes: Piston, rings, pin, clips
12.5:1 98 97.98 478
3
-----
901382 901622 901041 -----
WR 450F 07-13 Forged Replica Top end piston kit includes: piston, rings, pins,
circlips, top end gaskets, and cam chain.
12.5:1 95 94.95 450 STD
903264 -----
-----
-----
-----
PISTONS
