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S&S Cycle Chrome Tuned Induction System

J&P Cycles Part Number: 420-377

Manufacturer Part Number: 106-4967


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Important Fitment Note

Model specific mounting brackets required and sold separately. 2.19"


Description for S&S Cycle Chrome Tuned Induction System

• The heart of the single bore tuned induction system is the dual runner, two-into-one intake

• The tuned runners are very similar in appearance to the original dual runner intake for the now obsolete dual bore induction system, but the design allows for more flexibility

• Instead of bolting directly to a throttle body the runners of the single bore induction join together in a smooth, flow enhancing curve and the unit bolts to an adaptor bracket

• Like the VFI dual tuned runner system, the single bore tuned runner delivers a healthy boost in midrange torque. just what a street rider needs

• Peak horsepower is also increased

• The tuned runner system makes even more horsepower than an S&S teardrop air cleaner

• Performance increases are across the board for stock and big inch engines alike

• Requires one of the following adaptor brackets for your specific bike, sold separately

420-379 adaptor for 1984-2007 Big Twin with CV carb or Delphi EFI, chrome

420-380 adaptor for 1984-2007 Big Twin with Super ‘E’ or ‘G’ carb, chrome

420-381 for 1984-2006 XL with Super ‘E’ or ‘G’ carb, chrome

Product Specs

Product Specs for S&S Cycle Chrome Tuned Induction System

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Fitment Note:

Model specific mounting brackets required and sold separately. 2.19"

Fitment Note:

This item is a universal/custom fit component, and does not have any direct standard/OEM model application. Some items may require modification and an advanced level of mechanical skill and/or knowledge for installation.

Fitment Questions?

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Customer Reviews

Customer Reviews for S&S Cycle Chrome Tuned Induction System

Overall Rating

5 out of 5 stars (based on 5 reviews)

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Sweet !


Perfect, order its bracket for fitment.


Quality parts, price & service at J&P Cycles just can't be surpassed. I'm extremely impressed, as usual.


Worked as described. However, on my 95" motor, it would stumble just a little bit when giving it throttle. May be better for a bit bigger engine or one with more modifications.


Couldn't be more satisfied.

Shipping Note

Due to state regulations we cannot ship this item to the state of California.

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