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Our catalogue has grown extensively over the years and we now source a huge range of parts and accessories from a number of distributors from round the world.

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Price Match Promise 
We offer a price match promise on all items we sell. Use the "Seen it cheaper?" option found on the product pages to request a price match.

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ARH Custom Custom Motorcycle Parts and Accessories ARH Custom Custom Motorcycle Parts and Accessories
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  • Rinehart 4 Inch HP40 2 Into 1 Slip-On Muffler In Chrome For Harley Davidson M8 Softail 2025-Up Models (500-1250)

Rinehart 4 Inch HP40 2 Into 1 Slip-On Muffler In Chrome For Harley Davidson M8 Softail 2025-Up Models (500-1250)

  • Rinehart 4 Inch HP40 2 Into 1 Slip-On Muffler In Chrome For Harley Davidson M8 Softail 2025-Up Models (500-1250)
£547.42 inc.VAT
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Seen it cheaper elsewhere?

Our Price Promise

Seen this item cheaper on another website? Let us try and match it!

We do our upmost to keep our prices competitive but due to the number of items we sell, you may occasionally find a better price advertised elsewhere. If you have seen a cheaper price on another website let us know by filling in this form. If we’re able to match the price, we’ll look to respond via email with a unique discount code within 1 hour (during working hours) so you're not waiting too long.

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Please note:

  1. The item must be identical to the one on our website listing and must show as being available.
  2. Price match applies to items sourced from authorised UK retailers only, not private sellers.
  3. Prices will only be matched from UK based websites with prices in GBP.
  4. ARH Custom reserve the right to price match only one of each item per customer.
  5. ARH Custom reserve the right to withdraw the price match policy at any time.

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Send us your email and we'll let you know when its available.

About Shipping Costs

Shipping Cost

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4" HP40 Muffler Slip-On for HD Softails

  • 4" HP40 Slip-On Muffler
  • From the leader in V-twin exhaust, HP40 2 into 1 Slipon for select 2025 Softail models.
  • Made to the same exacting standards as our HP45 and DBX Touring Slipons, this free flowing 4” muffler is a perfect fit for your factory 2 into 1 header, and will give you the deep, throaty, Rinehart Rumble you know and love and, with our spiral core baffle technology, the HP40 will also help your bike breathe, increasing the performance for a snappier, more responsive throttle.
  • All this and our legendary Made in America Lifetime Warranty.

Specifications +

Mounting Position: Right
End Cap Material: Stainless Steel
Units: Kit
Type: Slip-On
Product Name: Muffler
Muffler Color/Finish: Chrome
Muffler Material: Stainless Steel
End Cap Color/Finish: Black

Part numbers +

  • 18011878
  • 1801-1878
  • 500-1250

Fitment +

    HARLEY DAVIDSON
  • Softail Heritage Classic 117 - FLHC: 2025
  • Softail Street Bob 117 - FXBB: 2025
  • Softail Low Rider ST 117 - FXLRST: 2025
  • Softail Low Rider S 117 - FXLRS: 2025

Delivery +

All orders are shipped with either DPD, Fedex, UPS, DHL or Royal Mail. The courier used to ship your order is determined by ourselves once your order has been placed and normally depends on the size, volume and the shipping destination. The selected courier for your order will be quoted in your order confirmation email which you will receive once we have processed your order. Once your order has been shipped, this will be confirmed via email and you will receive a tracking number so you can keep an eye on your shipments progress.

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Shipping Cost

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