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Home → Bay Outboard Extention kits → Yamaha

Yamaha & Mariner
 Long Shaft Extension Kits
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NEW MODEL 805A For Offshore Series 225, 250 & 300hp

 Bay has expanded its line of kits to convert  many Mariner and Yamaha 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. 



New 4 Stroke Models Available.


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Extension Kit for Yamaha T8 & T9.9 4 stroke
Extension Kit for Yamaha T8 & T9.9 4 stroke
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. This Extension Kit is for this Models: Yamaha T8 & T9.9 4 stroke - Length 5 inches
 
Base SKU:T8100811A
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Yamaha T9.9
Extension Kit for Yamaha T9.9
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. This Extension Kit is for this Models: Yamaha T9.9 - Length 5 inches
 
Base SKU:T9100811
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Yamaha 9.9 & 15hp 2 stroke
Extension Kit for Yamaha 9.9 & 15hp 2 stroke
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. This Extension Kit is for this Models: Yamaha 9.9 & 15hp 2 stroke - Length 5 inches
 
Base SKU:9100811
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Yamaha 8 & 9.9hp 4 stroke
Extension Kit for Yamaha 8 & 9.9hp 4 stroke
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. This Extension Kit is for this Models: Yamaha 8 & 9.9hp 4 stroke - Length 5 inches
 
Base SKU:8100811
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Yamaha 15 hp 4 stroke NEW MODEL
Extension Kit for Yamaha 15 hp 4 stroke NEW MODEL
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. This Extension Kit is for this Models: Yamaha 15 hp 4 stroke NEW MODEL - Length 5 inches
 
Base SKU:15hp100811
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Yamaha 20 hp 4 stroke NEW MODEL
Extension Kit for Yamaha 20 hp 4 stroke NEW MODEL
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. This Extension Kit is for this Models: Yamaha 20 hp 4 stroke NEW MODEL - Length 5 inches
 
Base SKU:20hp100814
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kit for Yamaha 25hp 2 stroke
Extension Kit for Yamaha 25hp 2 stroke
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. This Extension Kit is for this Models: Yamaha 25hp 2 stroke - Length 5 inches
 
Base SKU:25hp2100813
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kit for Yamaha 25hp 4 stroke
Extension Kit for Yamaha 25hp 4 stroke
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. This Extension Kit is for this Models: Yamaha 25hp 4 stroke - Length 5 inches
 
Base SKU:25ho4100812
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kit for Yamaha T25hp
Extension Kit for Yamaha T25hp
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. This Extension Kit is for this Models: Yamaha T25hp - Length 5 inches
 
Base SKU:t25hp100806
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 20hp 2 stroke
Extension Kit for Yamaha 20hp 2 stroke
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. This Extension Kit is for this Models: Yamaha 20hp 2 stroke - Length 5 inches
 
Base SKU:20hp2100811
In Stock:Yes
Price: $420.00 
 
Quantity:   
Extension Kit for Mariner 30/40 hp
Extension Kit for Mariner 30/40 hp
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. Mariner 30/40 hp - Length 5 inches
 
Base SKU:MAR100806
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 40hp 3 cyl.
Extension Kit for Yamaha 40hp 3 cyl.
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. Yamaha 40hp 3 cyl. - Length 5 inches
 
Base SKU:Y40hp100807
In Stock:No
Price: $0.00 
 
Quantity:   
Extension Kit for Yamaha 25, 30, 40 hp
Extension Kit for Yamaha 25, 30, 40 hp
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. Yamaha 25, 30, 40 hp - Length 5 inches
 
Base SKU:Y100807A
In Stock:No
Price: $0.00 
 
Quantity:   
Extension Kit for Yamaha 30hp 4 Stroke NEW MODEL Threaded Shift Shaft
Extension Kit for Yamaha 30hp 4 Stroke NEW MODEL Threaded Shift Shaft
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. Yamaha 30hp 4 Stroke NEW MODEL - Length 5 inches
 
Base SKU:y30hp100806
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 30hp 4 Stroke NEW MODEL Splined Shift Shaft
Extension Kit for Yamaha 30hp 4 Stroke NEW MODEL Splined Shift Shaft
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. Yamaha 30hp 4 Stroke NEW MODEL - Length 5 inches
 
Base SKU:y30hp100806A
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 40hp & 50hp 4 stroke
Extension Kit for Yamaha 40hp & 50hp 4 stroke
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. Yamaha 40hp & 50hp 4 stroke - Length 5 inches
 
Base SKU:Y40hp100806
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 50hp 3 cyl.
Extension Kit for Yamaha 50hp 3 cyl.
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. Yamaha 50hp 3 cyl. - Length 5 inches
 
Base SKU:y50hp100807
In Stock:No
Price: $0.00 
 
Quantity:   
Extension Kit for Yamaha 50 & 60 4 Stroke
Extension Kit for Yamaha 50 & 60 4 Stroke
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. Yamaha 50 & 60 4 Stroke - Length 5 inches
 
Base SKU:y50hp100808
In Stock:Yes
Price: $540.00 
 
Quantity:   
Extension Kit for Yamaha 70, 75, 80, 85, 90 HP 2 stroke
Extension Kit for Yamaha 70, 75, 80, 85, 90 HP 2 stroke
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. Yamaha 70, 75, 80, 85, 90 HP 2 stroke - Length 5 inches
 
Base SKU:Y2100809
In Stock:Yes
Price: $539.00 
 
Quantity:   
Extension Kit for Yamaha 2010 & newer 70hp 4 stroke NEW MODEL
Extension Kit for Yamaha 2010 & newer 70hp 4 stroke NEW MODEL
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. Yamaha 2010 & newer 70hp 4 stroke NEW MODEL - Length 5 inches Complete kit
 
Base SKU:Y2010100808
In Stock:Yes
Price: $540.00 
 
Quantity:   
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