K&N High Flow Air Filter for Harley Davidson Street Bob/ Softail 1690 - HD-1611
K&N High Flow Air Filter for Harley Davidson Street Bob/ Softail 1690 - HD-1611
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K&N High-Flow Air Filter | Harley-Davidson Street Bob & Softail 103ci (HD-1611)
The HD-1611 is the specialized performance intake upgrade for Harley-Davidson’s Twin Cam 103 (1690cc) and 96ci (1584cc) engines. Specifically designed for models with the "teardrop" or "round" style air cleaner covers found on the Street Bob and Softail Slim, this filter provides a significant boost in air volume, helping these large-displacement V-twins breathe better throughout the rev range.
Key Features
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High-Volume Airflow: Engineered to provide up to 50% more airflow than the stock paper element. This allows the 103ci engine to maintain its peak torque longer, particularly beneficial during heavy acceleration or highway passing.
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Premium Filtration & Protection: Features K&N’s signature multi-layered oiled cotton gauze media. It provides world-class filtration by trapping 99% of harmful contaminants while maintaining the high air velocity required by the EFI system.
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Washable & Reusable: A permanent "Lifetime" upgrade. Simply wash, re-oil, and reinstall. Under normal street conditions, it typically only requires cleaning every 80,000 km (50,000 miles).
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Direct Drop-In Fit: Precision-molded for a perfect, airtight seal within the factory airbox. It is a direct "plug-and-play" replacement for Harley-Davidson OEM part number 29314-08.
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Improved Intake Growl: Unlocks a deeper, more visceral intake "thump" that complements the signature Harley-Davidson exhaust note.
Technical Specifications
| Feature | Specification |
| Model Code | HD-1611 |
| Brand | K&N |
| Filter Material | High-Flow Oiled Cotton Media |
| Compatibility (103ci) | FXDB Street Bob (2014–2017), FLS Softail Slim (2012–2015), FXS Blackline (2012–2013) |
| Compatibility (96ci) | FLSTSB Softail Cross Bones (2008–2011) |
| Air Filter Shape | Unique (Custom-fit) |
| Dimensions | 181mm (L) x 144mm (W) x 41mm (H) |
| Warranty | 10-Year / Million Mile Limited Warranty |
Why Choose K&N for your Street Bob or Softail?
The 103ci Twin Cam is a torque monster, but it is often "choked" by the factory airbox to meet noise and emissions standards. The HD-1611 removes this restriction, providing a crisper throttle response and a more linear power delivery. It is the perfect foundation for a "Stage 1" upgrade, pairing exceptionally well with a fuel tuner and aftermarket pipes.
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2017 Harley Davidson FXDB Street Bob 103 CI All Models 2016 Harley Davidson FXDB Street Bob 103 CI All Models |
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2015 Harley Davidson FLS Softail Slim 103 CI All Models 2015 Harley Davidson FXDB Street Bob 103 CI All Models |
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2014 Harley Davidson FLS Softail Slim 103 CI All Models 2014 Harley Davidson FXDB Street Bob 103 CI All Models |
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2013 Harley Davidson FLS Softail Slim 103 CI All Models 2013 Harley Davidson FXS Blackline 103 CI All Models |
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2012 Harley Davidson FLS Softail Slim 103 CI All Models 2012 Harley Davidson FXS Blackline 103 CI All Models |
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2011 Harley Davidson FLSTSB Softail Cross Bones 96 CI All Models 2011 Harley Davidson FXS Blackline 103 CI All Models |
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2010 Harley Davidson FLSTSB Softail Cross Bones 96 CI All Models 2009 Harley Davidson FLSTSB Softail Cross Bones 96 CI US Models Only |
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2008 Harley Davidson FLSTSB Softail Cross Bones 96 CI US Models Only |
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