Mercury

Mercury

Mercury

Long Shaft Extension Kits

Bay has expanded its line of kits to convert Mercury outboards to long or extra long shaft. Even though they cost a fraction of factory parts alone to convert standard motors to long shaft, Bay extension kits are designed and manufactured of top quality materials to give lasting reliability to your outboard motor.

Using compatible alloys in both the housings, shafts, and studs, these kits are as corrosion resistant as the motor itself. All shaft and studs are of stainless steel and housings are cast of the same type of alloy as used in the motors.

Dealer pricing is available pending proper qualifications.

New Model!

Kit #301 – Mercury  8hp, 9.9hp 4 stroke

 

ModelSerial NumberBay Kit #Length
6, 8, 9.9, 15 2 strokeA197112 and up1085 inches
6, 8, 9.9, 15 2 strokeD281000 and up1085 inches
6, 8, 9.9, 15 2 stroke1B015065 and up1085 inches
9.9, 15 4 strokeOG590000 and up1095 inches
9.9, 15 4 stroke0T895575 and up1095 inches
9.9, 15 4 stroke1B015065 and up1095 inches
8hp & 9.9hp Newer 4 strokesOR & 1R Standard 209cc models3015 inches
9.9hp & 15hp Bigfoot, Pro Kicker, & Command ThrustOR Serial Numbers302/302A
(depends on drive shaft style)
5 inches
2020 & Newer 9.9hp EFI ModelsOR & 1R Serial Numbers3045 inches
15hp & 20hp 4 stroke NEW MODEL OR Serial Numbers3025 inches
2018 NEW MODEL 9.9hp, 15hp & 20hp EFI & Prokicker 4 stroke

OR Serial Numbers - SPACER COMES PAINTED304 11 spline drive shaft

304A 10 spline drive shaf
5 inches
18 & 255705532 and up2255 inches
18 & 256416713 and up2265 inches
20 & 256443973 and up2265 inches
20 & 25G044027 and up226A5 inches
20 & 25B238464 and up2265 inches
25 2 stroke1B207251 and up226A5 inches
30 2 cyl.G053314 and up2275 inches
25 & 30 4 strokeOG760300 and up2285 inches
25 & 30 4 strokeOR Serial Numbers303 Shift Shaft has 2 Hole Drill Pin Coupler

303A Shift Shaft has a 1 Hole Drill Pin Coupler
5 inches
New 2023 25 & 30hp 4 Stroke ModelsSerial Numbers 1R154 & HigherKit #3055 inches
25 Big Foot 4 stroke0T425933 and up2285 inches
25 Big Foot 4 stroke1B184725 and up2285 inches
40 2 cyl.G053314 and up2275 inches
30, 40 4 strokeOG760300 and up2285 inches
30, 40 2 strokeOG760300 and up2275 inches
30, 40 2 stroke0T782393 and up2275 inches
30, 40 2 stroke1B180081 and up2275 inches
30-40 3 cyl.BIG FOOT4144 inches
60 3 cyl. 2 strokeD000750 and up4115 inches
60 3 cyl. 2 stroke0T455053 and up4115 inches
40, 45, 55, 60 3 cyl4115 inches
50 3 cyl 2 stroke2275 inches
50 3 cyl. 2 stroke0T501925 and up2275 inches
50 3 cyl. 2 stroke1B195987 and up2275 inches
50 3 cyl 4 strokeOG760300 and up2285 inches
50 4 strokeBIG FOOT OG and up4155 inches
40-50-60 4cyl 4 strokeOT and up4155 inches
50 4 cyl. 4 stroke1B020914 and up4155 inches
60 4 stroke & Command Thrust Models1B144686 and up415/415A5 inches
70 3 cyl.A996142 and up4105 inches
75 2 strokeD283222 and up4145 inches
75B240451 and up4145 inches
75 4 stroke 1.7 LiterDriveshaft not available for some models.414S5 inches
75hp 4 stroke 2.1 Liter NEW MODELS 2B095049 and up - SPACER COMES PAINTED615A5 inches
75 Optimax1B027808 and up4145 inches
80 3 cyl.A996142 and up4105 inches
90 3 cyl.A996142 and up4105 inches
90 3 cyl. 2 strokeD283222 and up4145 inches
90 4 stroke 1.7 LiterDriveshaft not available for some models.414S5 inches
90hp 4 stroke 2.1 Liter NEW MODELS 2B095049 and up - SPACER COMES PAINTED615A5 inches
90 Optimax1B027808 and up4145 inches
100 4 cyl.B209468 and up4105 inches
100 4 cyl.D283222 and up4145 inches
100 4 strokeDriveshaft not available for some models.414S5 inches
115 (Does not fit inline 6 models)B209468 and up4105 inches
115 4 stroke 1.7 LiterDriveshaft not available for some models.414S5 inches
115hp 4 stroke 2.1 Liter NEW MODELS 2B095049 and up - SPACER COMES PAINTED615A5 inches
115 4 cyl.D283222 and up4145 inches
115 Optimax1B027808 and up4145 inches
125 4 cyl.D283222 and up4145 inches
150 V-6 20"4868998 and up6115 inches
150 V-6 25"6042946 and up611A5 inches
150 V-6 20"6443213 and up6115 inches
150 V-6 25"6443213 and up611A5 inches
150 PRO XS 2 Stroke


Pro XS Models 2 Stroke
2.5 liter


3.0 liter
611


613
5 inches
150 & PRO XS 4 Stroke


3.0 LITER
SPACER COMES PAINTED BLACK615A
615A 20 INCH TO 25 INCH

615AL
25 INCH TO 30 INCH
5 inches
135 \ 150 20"A904646 and up6115 inches
XR2 \ 135XD 25"611A5 inches
XR4 Magnum II 20"B242885 and up6115 inches
XR4 Magnum 175 25"611A5 inches
135 / 150 20"C100861 and up6115 inches
175 / 200 25"C100861 and up611A5 inches
135 / 150 20 "C239553 and up6115 inches
135 / 150 XR6DO82000 and up6115 inches
135 / 150 XR6OG303046 and up6115 inches
135 20" Optimax1B073074 and up6115 inches
150 20" Optimax1B106925 and up6115 inches
175 V-6 20"6618751 and up6115 inches
175 V-6 25"6618751 and up611A5 inches
175 20" Optimax0T908388 and up6115 inches

2018 NEW MODEL

V-6 175hp-225hp V8 200hp-300hp 4.8 in. & 5.4 in & Sport Master - SPACER COMES PAINTED616
From 20 inch to 25 inch Models

617
For 25 Inch Models Going to 30 Inch

617S
Going 20 inch to 30 inch
5 inches

10 inches
200 V-6 20"536918 and up6115 inches
200 V-6 25"5363918 and up611A5 inches
200 / 200 XR1 V-6C100861 and up6115 inches
175 / 200 XR6OG303046 and up6115 inches
200 Optimax0T667124 and up - SPACER COMES PAINTED6135 inches

2018 NEW MODEL

V-6 175hp-225hp V8 200hp-300hp 4.8 in. & 5.4 in & Sport Master - SPACER COMES PAINTED616
From 20 inch to 25 inch Models

617
For 25 Inch Models Going to 30 Inch

617S
Going 20 inch to 30 inch
5 inches

10 inches
220 & 225 V-65628028 and up6115 inches
225 & 250 1994-98By serial number6115 inches
3.0L1999 and up by serial - SPACER COMES PAINTED6135 inches
200, 225, 250 Optimax and DFI & EFI models 0G283148 and up - SPACER COMES PAINTED6135 inches
200 2.5L EFI0T235136 and up6115 inches
225 EFI models with Yamaha PowerheadOT and newer on some Mercury models with Yamaha Powerhead8055 inches
225 & 250 EFI0T944708 and up - SPACER COMES PAINTED6135 inches

2018 NEW MODEL

V-6 175hp-225hp V8 200hp-300hp 4.8 in. & 5.4 in & Sport Master - SPACER COMES PAINTED616
From 20 inch to 25 inch Models

617
For 25 Inch Models Going to 30 Inch

617S
Going 20 inch to 30 inch
5 inches

10 inches
Verado 135, 150, 175, 200, 225, 250, 275, 300, 350No driveshaft available614S5 inches
300 hpOG981393 and up - SPACER COMES PAINTED6135 inches