
Honda VTX 1300 and VTX 1800 owners have been discussing the interchangeability of fuel tanks on their motorcycles. While some forum users have stated that VTX 1300 and VTX 1800 fuel tanks will fit on the same frame, others have pointed out that the shape of the tank and the model type (C, R, S, etc.) must be considered. Additionally, customisation options such as stretching a 1300 tank or adding an auxiliary fuel tank have been suggested to improve mileage.
| Characteristics | Values |
|---|---|
| Interchangeability of VTX 1300 and VTX 1800 fuel tanks | The tanks will fit on the same frame, but the shape of the tank is different. R, S, and T models are interchangeable, but the C model is different. |
| Modifications required | Some users suggest taking the tank to an experienced customizer to stretch the tank, but this may be expensive. |
| Alternative options | One user suggests using an auxiliary fuel tank on the rack, but this does not have a fuel pump. |
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What You'll Learn

Compatibility with other models
Honda VTX 1300 and VTX 1800 Models
The Honda VTX 1300 and VTX 1800 motorcycles have different fuel tank designs, with varying compatibility across their respective sub-models. The fuel tanks of the VTX 1300 and VTX 1800 are not directly interchangeable due to differences in their frames and tank shapes. However, within these models, there is some variation:
Honda VTX 1300 Models
The Honda VTX 1300 comes in different variants, such as the S model, as seen in the 2003 Honda VTX1300 S Fuel Gas Petrol Tank Reservoir. This model is specifically designed for the 2003 Honda VTX1300 S, indicating that fuel tanks are often model- and year-specific, even within the same motorcycle series.
Honda VTX 1800 Models
The Honda VTX 1800 also has various sub-models, including the C and F variants. The fuel tanks for the C and F models are not interchangeable due to differences in shape and mounting points. For instance, the 2002-2006 C tanks are exclusive to C models, while the 2005-2007 F tanks are specific to F models.
Interchangeable Models
However, there is some interchangeability between certain models. The R, S, N, and T models of the VTX 1800 share interchangeable fuel tanks for specific years. For instance, the 2002-2005 R and S models have interchangeable fuel tanks, and the 2005-2009 R, S, N, and T models can also swap fuel tanks.
Honda VTX 1800 C and F Models
While the C and F models typically have dedicated fuel tanks, there is an overlap for certain years. The 2007-2009 C and F models can interchange fuel tanks, but this is not compatible with the 2005-2006 C model.
Honda VTX 1800 Neo and F Models
There is also a suggestion that it may be possible to make a fuel tank from an F model compatible with a Neo model by cutting and rewelding the tabs. However, this modification requires expert welding skills and repainting the tank.
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The shape of the tank
The shape of the fuel tank is an important consideration when attempting to fit a VTX 1300 fuel tank to a VTX1800 frame. While some Honda VTX 1300 and VTX 1800 fuel tanks may appear similar, there are subtle differences in shape that can impact compatibility.
The VTX 1300 fuel tank has a distinct shape that is designed to fit the specific contours of the VTX 1300 motorcycle frame. Similarly, the VTX1800 fuel tank is shaped to perfectly match the VTX1800 frame. While both tanks may visually appear similar, there are subtle differences in their contours. These differences can affect how the tank sits on the motorcycle and its overall compatibility with the frame.
The VTX1800 fuel tank has a slightly different shape, particularly around the mounting points and the area where the dashboard or instrument cluster is housed. The dash mounting points on the VTX1800 tank are positioned differently, and the cutout shape for the dash is unique. This means that the dashboard of a VTX1800 may not fit properly on a VTX 1300 fuel tank due to the different cutout shape.
Additionally, the VTX1800 fuel tank may have a wider profile, resulting in a slightly higher fuel capacity compared to the VTX 1300 tank. This difference in width can further emphasize the distinct shapes of the two tanks and their intended motorcycle models.
It is worth noting that some Honda VTX 1300 and VTX 1800 models share the same fuel tank design. For example, the R, S, N, and T models of the VTX 1300 and VTX 1800 have interchangeable fuel tanks. However, the C and F models of the VTX 1300 and VTX 1800 have unique tank shapes, emphasizing the importance of considering the specific model when discussing tank compatibility.
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The capacity of the tank
The capacity of the Honda VTX 1300 fuel tank is a topic of discussion among motorcycle enthusiasts. Some users have reported that they were able to put 4.33 gallons of gas in their VTX 1300, while others claim that the tank can hold up to 5 gallons. One user mentioned that they were only able to get 97 miles out of their last tank, while another stated that they averaged 40 miles per gallon when riding at 70-75 mph. It is important to note that the fuel capacity may vary slightly between different models and years of the VTX 1300. For example, one user with a 2003 VTX 1300 S mentioned that their gas tank holds 5.3 gallons, while another user with a 2008 VTX 1300 stated that their tank holds 4.3 gallons.
Now, let's talk about the Honda VTX1800 fuel tank capacity. Unfortunately, there seems to be a lack of consensus on this topic as well. Some users have reported that their VTX1800 fuel tank can hold 5.3 gallons, which is similar to the capacity of the VTX 1300. However, one user with a 2002 VTX1800 C claimed that their tank could only hold 4.49 gallons, with about 1 gallon in reserve after the low fuel light came on. Another user with a 2008 VTX1800 T mentioned that their tank holds around 5.3 gallons and they typically start to see the fuel light come on around 120-135 miles. It's worth noting that the fuel capacity may differ based on the model and year of the VTX1800, similar to the VTX 1300.
While there may be some variation in fuel tank capacity between different models and years of the Honda VTX 1300 and VTX1800, it appears that the capacity generally falls within the range of 4 to 6 gallons. It's always a good idea to refer to the owner's manual or consult with a Honda dealership or mechanic to get specific information about your particular motorcycle's fuel tank capacity. Additionally, factors such as riding style, terrain, and wind conditions can also impact the mileage and fuel efficiency of these motorcycles, affecting how often one needs to refuel.
In terms of the interchangeability of fuel tanks between the Honda VTX 1300 and VTX1800, it appears that they may not be directly compatible. One user mentioned that the R, S, and T models of the VTX 1300 and VTX1800 have interchangeable fuel tanks, but the C model of the VTX1800 has a different shape and may not work with the VTX 1300. It is always recommended to consult with a mechanic or a Honda motorcycle specialist before attempting to interchange parts to ensure safety and compatibility.
In conclusion, the fuel tank capacity of the Honda VTX 1300 and VTX1800 motorcycles varies slightly depending on the model and year of manufacture. Both the VTX 1300 and VTX1800 fuel tanks typically hold between 4 to 6 gallons of gas, with some variation depending on the specific motorcycle. It is important to refer to the owner's manual or seek expert advice for precise information regarding your motorcycle's fuel tank capacity and any potential modifications or interchangeability of parts.
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The possibility of customisation
The Honda VTX 1300 and VTX 1800 motorcycles have different fuel tank specifications, with the VTX 1800 having a larger capacity due to its wider tank design. While some VTX 1300 fuel tanks may physically fit on the VTX 1800 frame, there are several factors that limit the possibility of direct customization:
Firstly, the fuel pump configuration differs between the models, with the VTX 1300 typically having an internal fuel pump, while the VTX 1800 models from 2005 onwards are equipped with an external fuel pump. This difference requires modifications to the fuel system and rewiring of the dash lights and gauges, a complex task that may deter casual customizers.
Secondly, the dash mounting points and the shape of the tank insert for the dashboard are not consistent across all VTX models. The C and F models, for instance, feature distinct differences in the shape of the tank insert, with the C model having a rounded design and the F model sporting a pointed one. While it is possible to use a different model's dashboard, it requires manual rewiring and customization expertise.
Thirdly, the speedometer configuration may be affected by swapping fuel tanks. Some VTX 1300 and VTX 1800 models have speedometers integrated with the fuel tank, which means that interchanging fuel tanks could result in having two speedometers. This may not be aesthetically pleasing or functionally ideal for riders.
Lastly, the seat compatibility may be impacted by the change in fuel tanks. The shape and design of the VTX 1300 and VTX 1800 fuel tanks differ, which could affect the proper fitting of the seat onto the new tank. This may require additional adjustments or customizations to ensure a seamless fit.
While it is possible to customize a VTX 1800 with a VTX 1300 fuel tank, it is a complex process that requires expertise in motorcycle mechanics and customization. It may involve rewiring, modifications to the fuel system, and adjustments to the dashboard, speedometer, and seating. The level of customization and adaptation needed underscores the importance of model-specific replacement parts, as highlighted by experienced VTX owners.
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The fuel pump type
The Honda VTX1300 and VTX1800 motorcycles have different fuel pump types. The VTX1300 models did not come with a fuel pump from the factory. Instead, they feature an accelerator pump for acceleration and an air cut-off valve for deceleration. However, the 2003 VTX1300 Retro models were equipped with an electric fuel pump.
On the other hand, the VTX1800 models are known to have fuel pumps. The 2002-2004 VTX 1800 models have internal fuel pumps located inside the fuel tank, while the 2004+ N models and all 2005+ VTX's have external fuel pumps.
For the VTX1800, there are internal fuel pump modification guides available online. These modifications aim to improve fuel efficiency by allowing access to the remaining fuel in the tank that the fuel pickup cannot reach. However, it is a complex process that may not be worth the effort for the small gain in mileage.
Additionally, when replacing or modifying the fuel pump, it is crucial to pay attention to the associated components, such as gaskets, hoses, bolts, and sensors, to ensure a proper and safe installation.
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Frequently asked questions
No, VTX 1300 fuel tanks cannot fit all VTX1800 frames. The compatibility of the fuel tank depends on the model of the VTX1800. For instance, 2002-2006 C tanks only work for C models, and 2005-2007 F tanks only work for F models.
No, a VTX 1300 fuel tank will not fit a 2002 VTX1800 C. Only C tanks are compatible with the 2002 VTX1800 C model.
It is possible to replace a VTX 1300 fuel tank with a VTX1800 one without cutting and welding, but it depends on the specific models involved. For instance, 2002-2005 R, S, and T models are interchangeable, and 2005-2009 R, S, N, and T models are also interchangeable. However, some models may require modifications, such as rewiring the cluster.










































