OSD Top End Kits

Custom assembled top end kits with your choice of WSM Standard, WSM Platinum, or Pro-X pistons. We think you will find we offer the largest options and choices when rebuilding your Yamaha!

NOTE WE DON'T NORMALLY STOCK THE PARTS TO BUILD THESE KITS BUT CAN USUALLY HAVE A KIT READY FOR SHIPPING 2-3 BUSINESS DAYS AFTER YOUR ORDER IS COMPLETED. NOTE TOO WE HAVEN'T ADDED 500 OR 1200 KITS YET BUT IF YOU NEED ONE USE THE CONTATC FORM AND LET US KNOW WHAT YOU HAVE AND WHAT YOU NEED.




Product Image Item Name- Model Price
OSD Yamaha 1100 Top End Kit 0.25mm - PRO X

OSD Yamaha 1100 Top End Kit 0.25mm - PRO X

OSD6725P $339.99

Add:

OSD Yamaha 1100 Top End Kit 0.25mm - WSM (STANDARD)

OSD Yamaha 1100 Top End Kit 0.25mm - WSM (STANDARD)

OSD6725W $250.99

Add:

OSD Yamaha 1100 Top End Kit 0.25mm- WSM (PLATINUM)

OSD Yamaha 1100 Top End Kit 0.25mm- WSM (PLATINUM)

OSD6725WP $270.99

Add:

OSD Yamaha 1100 Top End Kit 0.50mm - PRO X

OSD Yamaha 1100 Top End Kit 0.50mm - PRO X

OSD6726P $339.99

Add:

OSD Yamaha 1100 Top End Kit 0.50mm - WSM (STANDARD)

OSD Yamaha 1100 Top End Kit 0.50mm - WSM (STANDARD)

OSD6726W $250.99

Add:

OSD Yamaha 1100 Top End Kit 0.50mm- WSM (PLATINUM)

OSD Yamaha 1100 Top End Kit 0.50mm- WSM (PLATINUM)

OSD6726WP $270.99

Add:

OSD Yamaha 1100 Top End Kit 0.75mm - PRO X

OSD Yamaha 1100 Top End Kit 0.75mm - PRO X

OSD6727P $339.99

Add:

OSD Yamaha 1100 Top End Kit 0.75mm - WSM (STANDARD)

OSD Yamaha 1100 Top End Kit 0.75mm - WSM (STANDARD)

OSD6727W $250.99

Add:

OSD Yamaha 1100 Top End Kit 0.75mm- WSM (PLATINUM)

OSD Yamaha 1100 Top End Kit 0.75mm- WSM (PLATINUM)

OSD6727WP $270.99

Add:

OSD Yamaha 1100 Top End Kit 1.00mm - PRO X

OSD Yamaha 1100 Top End Kit 1.00mm - PRO X

OSD6728P $339.99

Add:

OSD Yamaha 1100 Top End Kit 1.00mm - WSM (STANDARD)

OSD Yamaha 1100 Top End Kit 1.00mm - WSM (STANDARD)

OSD6728W $250.99

Add:

OSD Yamaha 1100 Top End Kit 1.00mm- WSM (PLATINUM)

OSD Yamaha 1100 Top End Kit 1.00mm- WSM (PLATINUM)

OSD6728WP $270.99

Add:

OSD Yamaha 1100 Top End Kit Std - PRO X

OSD Yamaha 1100 Top End Kit Std - PRO X

OSD6729P $339.99

Add:

OSD Yamaha 1100 Top End Kit Std - WSM (STANDARD)

OSD Yamaha 1100 Top End Kit Std - WSM (STANDARD)

OSD6729W $250.99

Add:

OSD Yamaha 1100 Top End Kit Std- WSM (PLATINUM)

OSD Yamaha 1100 Top End Kit Std- WSM (PLATINUM)

OSD6729WP $270.99

Add:

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.25mm- WS

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.25mm- WS

OSD6735WP $338.99

Add:

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.50mm- WS

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.50mm- WS

OSD6736WP $338.99

Add:

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.75mm- WS

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 0.75mm- WS

OSD6737WP $338.99

Add:

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 1.00mm- WS

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit 1.00mm- WS

OSD6738WP $338.99

Add:

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit Std- WSM (

OSD Yamaha 1300 (2003-2004) (POWER VALVE) Top End Kit Std- WSM (

OSD6739WP $338.99

Add:

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.25mm- W

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.25mm- W

OSD6740WP $378.99

Add:

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.50mm- W

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.50mm- W

OSD6741WP $378.99

Add:

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.75mm- W

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 0.75mm- W

OSD6742WP $378.99

Add:

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 1.00mm- W

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit 1.00mm- W

OSD6743WP $378.99

Add:

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit Std- WSM

OSD Yamaha 1300 (2005 UP) (NO POWER VALVE) Top End Kit Std- WSM

OSD6744WP $378.99

Add:

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.25mm - WSM (STANDARD)

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.25mm - WSM (STANDARD)

OSD6705W $149.99

Add:

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.50mm - WSM (STANDARD)

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.50mm - WSM (STANDARD)

OSD6706W $149.99

Add:

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.75mm - WSM (STANDARD)

OSD Yamaha 650 (ALL OTHER) Top End Kit 0.75mm - WSM (STANDARD)

OSD6707W $149.99

Add:

OSD Yamaha 650 (ALL OTHER) Top End Kit 1.00mm - WSM (STANDARD)

OSD Yamaha 650 (ALL OTHER) Top End Kit 1.00mm - WSM (STANDARD)

OSD6708W $149.99

Add:

OSD Yamaha 650 (ALL OTHER) Top End Kit Std - WSM (STANDARD)

OSD Yamaha 650 (ALL OTHER) Top End Kit Std - WSM (STANDARD)

OSD6709W $149.99

Add:

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.25mm - WSM (STAN

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.25mm - WSM (STAN

OSD6700W $154.99

Add:

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.50mm - WSM (STAN

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.50mm - WSM (STAN

OSD6701W $154.99

Add:

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.75mm - WSM (STAN

OSD Yamaha 650 WR III (1990-1993) Top End Kit 0.75mm - WSM (STAN

OSD6702W $154.99

Add:

OSD Yamaha 650 WR III (1990-1993) Top End Kit 1.00mm - WSM (STAN

OSD Yamaha 650 WR III (1990-1993) Top End Kit 1.00mm - WSM (STAN

OSD6703W $154.99

Add:

OSD Yamaha 650 WR III (1990-1993) Top End Kit Std - WSM (STANDAR

OSD Yamaha 650 WR III (1990-1993) Top End Kit Std - WSM (STANDAR

OSD6704W $154.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.25mm - PRO X

OSD Yamaha 701 (61X) Top End Kit 0.25mm - PRO X

OSD6710P $217.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.25mm - WSM (STANDARD)

OSD Yamaha 701 (61X) Top End Kit 0.25mm - WSM (STANDARD)

OSD6710W $159.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.25mm- WSM (PLATINUM)

OSD Yamaha 701 (61X) Top End Kit 0.25mm- WSM (PLATINUM)

OSD6710WP $172.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.50mm - PRO X

OSD Yamaha 701 (61X) Top End Kit 0.50mm - PRO X

OSD6711P $217.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.50mm - WSM (STANDARD)

OSD Yamaha 701 (61X) Top End Kit 0.50mm - WSM (STANDARD)

OSD6711W $159.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.50mm- WSM (PLATINUM)

OSD Yamaha 701 (61X) Top End Kit 0.50mm- WSM (PLATINUM)

OSD6711WP $172.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.75mm - PRO X

OSD Yamaha 701 (61X) Top End Kit 0.75mm - PRO X

OSD6712P $217.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.75mm - WSM (STANDARD)

OSD Yamaha 701 (61X) Top End Kit 0.75mm - WSM (STANDARD)

OSD6712W $159.99

Add:

OSD Yamaha 701 (61X) Top End Kit 0.75mm- WSM (PLATINUM)

OSD Yamaha 701 (61X) Top End Kit 0.75mm- WSM (PLATINUM)

OSD6712WP $172.99

Add:

OSD Yamaha 701 (61X) Top End Kit 1.00mm - PRO X

OSD Yamaha 701 (61X) Top End Kit 1.00mm - PRO X

OSD6713P $217.99

Add:

OSD Yamaha 701 (61X) Top End Kit 1.00mm - WSM (STANDARD)

OSD Yamaha 701 (61X) Top End Kit 1.00mm - WSM (STANDARD)

OSD6713W $159.99

Add:

OSD Yamaha 701 (61X) Top End Kit 1.00mm- WSM (PLATINUM)

OSD Yamaha 701 (61X) Top End Kit 1.00mm- WSM (PLATINUM)

OSD6713WP $172.99

Add:

OSD Yamaha 701 (61X) Top End Kit Std - PRO X

OSD Yamaha 701 (61X) Top End Kit Std - PRO X

OSD6714P $217.99

Add:

OSD Yamaha 701 (61X) Top End Kit Std - WSM (STANDARD)

OSD Yamaha 701 (61X) Top End Kit Std - WSM (STANDARD)

OSD6714W $159.99

Add:

OSD Yamaha 701 (61X) Top End Kit Std- WSM (PLATINUM)

OSD Yamaha 701 (61X) Top End Kit Std- WSM (PLATINUM)

OSD6714WP $172.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.25mm - PRO X

OSD Yamaha 701 (62T) Top End Kit 0.25mm - PRO X

OSD6715P $217.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.25mm - WSM (STANDARD)

OSD Yamaha 701 (62T) Top End Kit 0.25mm - WSM (STANDARD)

OSD6715W $158.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.25mm- WSM (PLATINUM)

OSD Yamaha 701 (62T) Top End Kit 0.25mm- WSM (PLATINUM)

OSD6715WP $171.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.50mm - PRO X

OSD Yamaha 701 (62T) Top End Kit 0.50mm - PRO X

OSD6716P $217.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.50mm - WSM (STANDARD)

OSD Yamaha 701 (62T) Top End Kit 0.50mm - WSM (STANDARD)

OSD6716W $158.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.50mm- WSM (PLATINUM)

OSD Yamaha 701 (62T) Top End Kit 0.50mm- WSM (PLATINUM)

OSD6716WP $171.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.75mm - PRO X

OSD Yamaha 701 (62T) Top End Kit 0.75mm - PRO X

OSD6717P $217.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.75mm - WSM (STANDARD)

OSD Yamaha 701 (62T) Top End Kit 0.75mm - WSM (STANDARD)

OSD6717W $158.99

Add:

OSD Yamaha 701 (62T) Top End Kit 0.75mm- WSM (PLATINUM)

OSD Yamaha 701 (62T) Top End Kit 0.75mm- WSM (PLATINUM)

OSD6717WP $171.99

Add:

OSD Yamaha 701 (62T) Top End Kit 1.00mm - PRO X

OSD Yamaha 701 (62T) Top End Kit 1.00mm - PRO X

OSD6718P $217.99

Add:

OSD Yamaha 701 (62T) Top End Kit 1.00mm - WSM (STANDARD)

OSD Yamaha 701 (62T) Top End Kit 1.00mm - WSM (STANDARD)

OSD6718W $158.99

Add:

OSD Yamaha 701 (62T) Top End Kit 1.00mm- WSM (PLATINUM)

OSD Yamaha 701 (62T) Top End Kit 1.00mm- WSM (PLATINUM)

OSD6718WP $171.99

Add:

OSD Yamaha 701 (62T) Top End Kit Std - PRO X

OSD Yamaha 701 (62T) Top End Kit Std - PRO X

OSD6719P $217.99

Add:

OSD Yamaha 701 (62T) Top End Kit Std - WSM (STANDARD)

OSD Yamaha 701 (62T) Top End Kit Std - WSM (STANDARD)

OSD6719W $158.99

Add:

OSD Yamaha 701 (62T) Top End Kit Std- WSM (PLATINUM)

OSD Yamaha 701 (62T) Top End Kit Std- WSM (PLATINUM)

OSD6719WP $171.99

Add:

OSD Yamaha 760 Top End Kit 0.25mm - PRO X

OSD Yamaha 760 Top End Kit 0.25mm - PRO X

OSD6720P $231.99

Add:

OSD Yamaha 760 Top End Kit 0.25mm - WSM (STANDARD)

OSD Yamaha 760 Top End Kit 0.25mm - WSM (STANDARD)

OSD6720W $180.99

Add:

OSD Yamaha 760 Top End Kit 0.25mm- WSM (PLATINUM)

OSD Yamaha 760 Top End Kit 0.25mm- WSM (PLATINUM)

OSD6720WP $191.99

Add:

OSD Yamaha 760 Top End Kit 0.50mm - PRO X

OSD Yamaha 760 Top End Kit 0.50mm - PRO X

OSD6721P $231.99

Add:

OSD Yamaha 760 Top End Kit 0.50mm - WSM (STANDARD)

OSD Yamaha 760 Top End Kit 0.50mm - WSM (STANDARD)

OSD6721W $180.99

Add:

OSD Yamaha 760 Top End Kit 0.50mm- WSM (PLATINUM)

OSD Yamaha 760 Top End Kit 0.50mm- WSM (PLATINUM)

OSD6721WP $191.99

Add:

OSD Yamaha 760 Top End Kit 0.75mm - PRO X

OSD Yamaha 760 Top End Kit 0.75mm - PRO X

OSD6722P $231.99

Add:

OSD Yamaha 760 Top End Kit 0.75mm - WSM (STANDARD)

OSD Yamaha 760 Top End Kit 0.75mm - WSM (STANDARD)

OSD6722W $180.99

Add:

OSD Yamaha 760 Top End Kit 0.75mm- WSM (PLATINUM)

OSD Yamaha 760 Top End Kit 0.75mm- WSM (PLATINUM)

OSD6722WP $191.99

Add:

OSD Yamaha 760 Top End Kit 1.00mm - PRO X

OSD Yamaha 760 Top End Kit 1.00mm - PRO X

OSD6723P $231.99

Add:

OSD Yamaha 760 Top End Kit 1.00mm - WSM (STANDARD)

OSD Yamaha 760 Top End Kit 1.00mm - WSM (STANDARD)

OSD6723W $180.99

Add:

OSD Yamaha 760 Top End Kit 1.00mm- WSM (PLATINUM)

OSD Yamaha 760 Top End Kit 1.00mm- WSM (PLATINUM)

OSD6723WP $191.99

Add:

OSD Yamaha 760 Top End Kit Std - PRO X

OSD Yamaha 760 Top End Kit Std - PRO X

OSD6724P $231.99

Add:

OSD Yamaha 760 Top End Kit Std - WSM (STANDARD)

OSD Yamaha 760 Top End Kit Std - WSM (STANDARD)

OSD6724W $180.99

Add:

OSD Yamaha 760 Top End Kit Std- WSM (PLATINUM)

OSD Yamaha 760 Top End Kit Std- WSM (PLATINUM)

OSD6724WP $191.99

Add:

OSD Yamaha 800 Top End Kit 0.25mm- WSM (PLATINUM)

OSD Yamaha 800 Top End Kit 0.25mm- WSM (PLATINUM)

OSD6730WP $209.99

Add:

OSD Yamaha 800 Top End Kit 0.50mm - PRO X

OSD Yamaha 800 Top End Kit 0.50mm - PRO X

OSD6731P $286.99

Add:

OSD Yamaha 800 Top End Kit 0.50mm- WSM (PLATINUM)

OSD Yamaha 800 Top End Kit 0.50mm- WSM (PLATINUM)

OSD6731WP $209.99

Add:

OSD Yamaha 800 Top End Kit 0.75mm- WSM (PLATINUM)

OSD Yamaha 800 Top End Kit 0.75mm- WSM (PLATINUM)

OSD6732WP $209.99

Add:

OSD Yamaha 800 Top End Kit 1.00mm - PRO X

OSD Yamaha 800 Top End Kit 1.00mm - PRO X

OSD6733P $286.99

Add:

OSD Yamaha 800 Top End Kit 1.00mm- WSM (PLATINUM)

OSD Yamaha 800 Top End Kit 1.00mm- WSM (PLATINUM)

OSD6733WP $209.99

Add:

OSD Yamaha 800 Top End Kit Std- WSM (PLATINUM)

OSD Yamaha 800 Top End Kit Std- WSM (PLATINUM)

OSD6734WP $209.99

Add: