K&N
K&N Oil Filter WR250 X/F, WR/YZ450F, YZ250F (50 ctn)
Oil FiltersSKU KN-140
Cheapest we found
$11.95
at XPERT Moto Gear
14 recent in-stock prices · spread $4.04 (34%)
Based only on in-stock prices checked in the last 30 days. 14 stores checked; dates for every store are shown below.
Recorded store prices
Prices we recorded when we last checked each store for this exact variant.
Product details
The K&N KN-140 is a cartridge-style powersports oil filter built for four-stroke Yamaha dirt bikes, enduros and sport ATVs. It uses a high-flow premium filter medium with uniform pleats to trap harmful contaminants while allowing oil to move freely through the engine's lubrication system.
It suits riders running high-end synthetic oils, where free flow and consistent filtration matter — from weekend trail and motocross use through to racers and engine builders who service their own machines. The KN-140 is a direct cartridge replacement and is also referenced as an HF140 equivalent.
Price history
Recorded changes for this exact variant.
Step chart of dated store-price observations. Solid lines show confirmed crawl coverage, dashed lines show overdue missed-check spans, and every line stops at the last confirmed price.
- 1XPERT Moto Gear3 points · last checked 21 Aug 2026
- 2Road Runner Moto1 point · last checked 21 Aug 2026
- 3MotoTrack Accessories1 point · last checked 21 Aug 2026
- 4Bikebiz1 point · last checked 21 Aug 2026
- 5Bikers Gear Australia1 point · last checked 21 Aug 2026
- 6RACE and ROAD1 point · last checked 20 Aug 2026
8 more store series are not shown to keep the chart readable.
Solid steps show periods confirmed by the store’s change-only price history and completed crawl record: if the price had changed at a check, another point would appear. Dashed steps show overdue periods with no completed crawl confirmation. Every line stops at that listing’s last confirmed check and is never extended to today. Prices are not live and may have changed since the last point shown.
How we collect and compare prices