Pay in 4 interest-free payments
K&N Custom Racing Air Filter 56-9121
NOW
£129.00
afterpay
Or 4 interest-free payments of
£32.25
In stock at 1 of our locations
🚛
Free NZ shipping
🔒
12 month warranty on all parts
✅
NZ WOF compliant
🔧
Fitting available NZ wide
K&N Custom Air Filters for Single or Two Barrel Carburetors - K&N custom air filter kits are designed to boost performance from your carburetor while keeping the dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and the famous K&N High-Flow Washable Air Filter. - Designed to increase horsepower and acceleration- Show quality with custom chrome top and base- Washable and reusable air filter- High air flow with excellent filtration- One year limited warrantyProduct Specifications:Air Filter Color RedAir Filter Height 1.75 in (44 mm)Air Filter Material Cotton GauzeAir Filter Shape RoundInlet Diameter 1.281 in (33 mm)Mounting Hardware Included YesNeck Flange 1.281 in (33 mm)Overall Height 2 in (51 mm)Product Box Height 6.56 in (167 mm)Product Box Length 3.5 in (89 mm)Product Box Width 6.31 in (160 mm)Product Style Custom AssembliesReplacement Filter E-3211
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
Product Enquiry
Got a question about this product? Need to check fitment for your vehicle? Fill in the form below and we'll get back to you within 24 hours.
4.8
★★★★★
23 reviews