964
Model Years Compression
Ratio
Stock
Engine
Bore x
Stroke
Bore
Size
Piston Type
and Coatings
Cylinder and Machining
Requirements
Top End
Kit
MTV # Single Piston MTV # Ring Set MTV # Piston
Pin
MTV # Circlip MTV # Top End
Bearing
MTV #
Yamaha 4-Stroke
YZ450F
WR450F
06-09
07-15
13:1 95.0 95.0 ArmorGlide Deglaze / Hone PK1363 316-3389 4786M09500 316-0421 3741XS 316-3517 S600 316-3193 CW18 316-1905
X 97.0 Bore / Replate 4786M09700 316-0422 3819XS 316-3518
63.4
YZ450F 10-13 12.5:1 97.0 97.0 ArmorGlide Deglaze / Hone PK1872 316-0173 40001M09700 379-5675 3819XS 316-3518 S759 379-5674 CW18 316-1905
X Boxed
Forging
60.8
YZ450F 10-13 13:1 97.0 97.0 ArmorGlide Deglaze / Hone PK1873 316-0190 40002M09700 379-5537 3819XS 316-3518 S759 379-5674 CW18 316-1905
X Boxed
Forging
60.8
YZ450F 10-13 13.5:1 97.0 97.0 Racers Choice Deglaze / Hone RC879M09700 316-3845 9700ZSA 316-3865 S759C 316-0673 CW18 316-1905
X ArmorGlide
60.8 ArmorPlating
Boxed
Forging
DLC Piston
Pin
Titanium
Nitride
coated rings
YZ450F
YZ450FX
WR450F
14-16
2016
16-17
12.5:1 97.0 97.0 ArmorGlide Deglaze / Hone 40111M09700 316-0645 9700ZS 316-3516 S759 379-5674 CW18 316-1905
X Boxed
Forging
60.8
YZ450F
YZ450FX
WR450F
14-16
2016
16-17
13.5:1 97.0 97.0 ArmorGlide Deglaze / Hone PK1912 316-3945 40121M09700 316-0733 9700ZS 316-3516 S759 379-5674 CW18 316-1905
X Boxed
Forging
60.8
YZ450F
YZ450FX
WR450F
14-16
2016
16-17
14:1 97.0 97.0 Racers Choice Deglaze / Hone RC904M09700 316-0807 9700ZSA 316-3865 S759C 316-0673 CW18 316-1905
X ArmorGlide
60.8 ArmorPlating
Boxed
Forging
DLC Piston
Pin
Titanium
Nitride
coated rings
SR500
TT500
XT500
European models
All 9:1 87.0 87.0 Deglaze / Hone 4764M08700 379-5550 3425XC 316-3034 S553 316-3166 CW20 316-1906
X 87.5 Bore & Hone 4764M08750 379-5551 3445XC 316-3035
84.0 88.0 Bore & Hone 4764M08800 379-5552 3465XC 316-3036
88.5 Bore & Hone 4764M08850 379-5553 3484XC 316-3037
89.0 Bore & Hone 4764M08900 379-5554 3504XC 316-2956
SR500
TT500
XT500
All 10:1 87.0 87.0 Deglaze / Hone 3425XC 316-3034 S553 316-3166 CW20 316-1906
x 87.5 Bore & Hone 3445XC 316-3035
84.0 88.0 Bore & Hone 3465XC 316-3036
88.5 Bore & Hone 3484XC 316-3037
89.0 Bore & Hone 4045M08900 316-1718 3504XC 316-2956
XT500
TT500
SR500
All 9:1 90.0 90.0 Deglaze / Hone 4783M09000 379-5558 3544XC 316-0400 S553 316-3166 CW20 316-1906
x Bore & Hone
84.0 Bore & Hone
Bore & Hone
Bore & Hone
WISECO PISTONS (CONT.)