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Home → Bay Outboard Extention kits → 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. 


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Extension Kits for Mercury Model 15 Serial Number: D281000 and up
Extension Kits for Mercury Model 15 Serial Number: D281000 and up
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. Extension Kits for Mercury Model 15 NEW MODEL Serial Number: D281000 and up - 5 Inches
 
Base SKU:MER15A100108
In Stock:No
Price: $380.00 
 
Quantity:   
Extension Kits for Mercury Model 15 Serial Number: B292414 and up
Extension Kits for Mercury Model 15 Serial Number: B292414 and up
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. Extension Kits for Mercury Model 15 NEW MODEL Serial Number: B292414 and up - 5 Inches
 
Base SKU:MER15100108
In Stock:Yes
Price: $380.00 
 
Quantity:   
Extension Kits for Mercury Model 18 & 25 Serial Number: 5705532 and up
Extension Kits for Mercury Model 18 & 25 Serial Number: 5705532 and up
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. Extension Kits for Mercury Model 15 NEW MODEL Serial Number: D281000 and up - 5 Inches
 
Base SKU:MER100225
In Stock:Yes
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 18 & 25 Serial Number: 6416713 and up
Extension Kits for Mercury Model 18 & 25 Serial Number: 6416713 and up
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. Extension Kits for Mercury Model 18 & 25 Serial Number: 6416713 and up - 5 Inches
 
Base SKU:MER100226
In Stock:Yes
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 20 & 25 Serial Number: 6443973 and up
Extension Kits for Mercury Model 20 & 25 Serial Number: 6443973 and up
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. Extension Kits for Mercury Model 20 & 25 Serial Number: 6443973 and up - 5 Inches
 
Base SKU:MERC100226
In Stock:No
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 20 & 25 Serial Number: B238464 and up
Extension Kits for Mercury Model 20 & 25 Serial Number: B238464 and up
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. Extension Kits for Mercury Model 20 & 25 Serial Number: B238464 and up - 5 Inches
 
Base SKU:MERCR100226
In Stock:No
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 20 & 25 Serial Number: G044027 and up
Extension Kits for Mercury Model 20 & 25 Serial Number: G044027 and up
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. Extension Kits for Mercury Model 20 & 25 Serial Number: G044027 and up - 5 Inches
 
Base SKU:MER100226A
In Stock:Yes
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 25 & 30 4 stroke Serial Number: OG760300 and up
Extension Kits for Mercury Model 25 & 30 4 stroke Serial Number: OG760300 and up
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. Extension Kits for Mercury Model 25 & 30 4 stroke Serial Number: OG760300 and up - 5 Inches
 
Base SKU:MER100228
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 25 2 stroke Serial Number: 1B207251 and up
Extension Kits for Mercury Model 25 2 stroke Serial Number: 1B207251 and up
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. Extension Kits for Mercury Model 25 2 stroke Serial Number: 1B207251 and up - 5 Inches
 
Base SKU:ME100226A
In Stock:No
Price: $440.00 
 
Quantity:   
Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 0T425933 and up
Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 0T425933 and up
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. Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 0T425933 and up - 5 Inches
 
Base SKU:MERC100228
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 1B184725 and up
Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 1B184725 and up
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. Extension Kits for Mercury Model 25 Big Foot 4 stroke Serial Number: 1B184725 and up - 5 Inches
 
Base SKU:ME100228
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 30 2 cyl. Serial Number: G053314 and up
Extension Kits for Mercury Model 30 2 cyl. Serial Number: G053314 and up
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. Extension Kits for Mercury Model 30 2 cyl. Serial Number: G053314 and up - 5 Inches
 
Base SKU:MER100227
In Stock:Yes
Regular Price: $460.00
On Sale For: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 0T782393 and up
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 0T782393 and up
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. Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 0T782393 and up - 5 Inches
 
Base SKU:MERCR100227
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 1B180081 and up
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 1B180081 and up
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. Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: 1B180081 and up - 5 Inches
 
Base SKU:MER-100227
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: OG760300 and up
Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: OG760300 and up
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. Extension Kits for Mercury Model 30, 40 2 stroke Serial Number: OG760300 and up - 5 Inches
 
Base SKU:M200227
In Stock:No
Price: $439.00 
 
Quantity:   
Extension Kits for Mercury Model 30, 40 4 stroke Serial Number: OG760300 and up
Extension Kits for Mercury Model 30, 40 4 stroke Serial Number: OG760300 and up
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. Extension Kits for Mercury Model 30, 40 4 stroke Classic Serial Number: OG760300 and upp - 5 Inches
 
Base SKU:M100228
In Stock:Yes
Price: $460.00 
 
Quantity:   
Extension Kits for Mercury Model 30-40 3 cyl. Serial Number: BIG FOOT
Extension Kits for Mercury Model 30-40 3 cyl. Serial Number: BIG FOOT
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. Extension Kits for Mercury Model 30-40 3 cyl. Serial Number: BIG FOOT - 4 Inches
 
Base SKU:MER100414
In Stock:Yes
Price: $560.00 
 
Quantity:   
Extension Kits for Mercury Model 35 Serial Number: B110789 and up
Extension Kits for Mercury Model 35 Serial Number: B110789 and up
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. Extension Kits for Mercury Model 35 Serial Number: B110789 and up - 5 Inches
 
Base SKU:MER100406-8
In Stock:No
Price: $0.00 
 
Quantity:   
Extension Kits for Mercury Model 40 2 cyl. Serial Number: 5556230 and up
Extension Kits for Mercury Model 40 2 cyl. Serial Number: 5556230 and up
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. Extension Kits for Mercury Model 40 2 cyl. Classic Serial Number: 5556230 and up - 5 Inches
 
Base SKU:ME100406-8
In Stock:No
Price: $0.00 
 
Quantity:   
Extension Kits for Mercury Model 40 2 cyl. Serial Number: G053314 and up
Extension Kits for Mercury Model 40 2 cyl. Serial Number: G053314 and up
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. Extension Kits for Mercury Model 40 2 cyl. Serial Number: G053314 and up - 5 Inches
 
Base SKU:MERC100227
In Stock:Yes
Price: $460.00 
 
Quantity:   
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