Kuryakyn
Kuryakyn Assembly Compression Sleeve 8139-7
SKU: K054 400257
Description
Part #: 400257
Precisely engineered compression sleeve for Harley-Davidson and aftermarket intake systems, optimizing sealed connections that reduce vibration and ensure smooth, leak-free operation
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Kuryakyn |
| Part Number | K054 400257 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy