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Replacement Filters > Replacement Air Filter

 List Price: $55.57
Your Price: $43.99

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K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED. [More Information on Replacement Air Filters]
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®
Available Information
RO-5010 Cross Reference
RO-5010 Vehicle Applications
News Story - 2009 to 2011 Royal Enfield Bullet C5/G5 & 2011 Royal Enfield Bullet 500 B5 Get Performance

Part RO-5010 Product Specifications
Product Style: Round Air Filter
Height: 3.125 in (79 mm)
Inner Wire: No
Inside Diameter: 3.687 in (94 mm)
Outside Diameter: 4.687 in (119 mm)
Top Style: Open
Top Material/Finish: None
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flanges: None
Package Contents: 1 Air Filter
Package Quantity: 1
Base Outside Diameter: 4.687 in (119 mm)
Filter Re-Oiling Amount: 0.49 oz (14 ml)
Top Outside Diameter: 4.687 in (119 mm)
Weight: 0.55 lb (0.25 kg)
Product Box Length: 6.31 in (160 mm)
Product Box Width: 6.56 in (167 mm)
Product Box Height: 3.5 in (89 mm)

Customer Feedback      Be the first to review part RO-5010

Its been almost 6 months since I installed your filter on my Royal Enfield TBTS. Comparing the previous filter it has proven to give me better accelaration, fuel efficiency and the thumping sound is of a matured one.. I am planing to buy an Alto K10 and within a month or so will change the air filter to KNN

Buy one and feel the difference. you won't regret. As rightly said , quality never comes cheap.
Here's one for the Royal Enfield Bullet (350cc Cast-Iron engine only), since you guys haven't been given much feedback on it. After installing a K&N R1100 on my bike, the bike started to run very lean and became extremely sluggish on the hills. Ill-informed mechanics are aplenty in India and sadly (but thankfully) I had to read and learn about the rejetting technique myself. 100 main-jet worked well for me and the performance has improved phenomenally over the stock RE-Bullet. Also it is important to get a free-flowing exhaust and an iridium spark-plug adds the icing to the cake to release the exhaust quicker and burn the excess fuel coming from the bigger main-jet.
All this with a decent fuel efficiency of 31Kms to the litre and a very responsive bike indeed.

Jesse S. Samuel, Chandigarh (UT), INDIA
ohh.... I did fit a K&N air filter on my bike, Thunderbird of Royal Enfield,,,
I am really speechless..... 0 to 100 very quickly... it rides smoother than before... no need for change gears often during city drive...and about the sound... my god... really bullet firing sound and it also reduced unwanted sounds in my bike..........K&N......great...
Rakesh Neelakantan, Kerala, India