Transform the 114" or the 117" oil-cooled M8 into 132". This performance kit includes an adjustable pressure relief valve that can be adjusted with the unit installed in the engine. The S&S valve springs feature a high-performance conical single-wire spring design, and big bore cylinders are matched with the cam/cam plate and oil pump. A magnet in the cam chest helps prevent debris from entering the oil pump, while independent scavenge sections are provided for the flywheel cavity and cam chest. Original engine serial numbers are retained for authenticity, and passage plugs are removable for servicing. The kit also includes MLS (multi-layered steel) head gaskets, a debris screen in both scavenge pickups, a performance matched 550 cam, and works with the stock crankcase while retaining the stock engine height. Additionally, it includes a cam cover badge and is proudly made in the USA.
Data sheet
- Riding Style
- Street
- Type
- Engine
- Units
- Kit
- Color/Finish
- Black
Non-Highlighted Fins
- Style
- Big Bore
- Bore Size Imperial
- 4.320"
- Stroke Length Imperial
- 4.500"
- Displacement
- 132"
- Cooling System
- Oil Cooled
- Cam Drive Type
- Chain
Shipping Policy
Shipping Areas:
We ship to:
- Spain (Peninsula and Balearic Islands)
- European Union countries
We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping Times:
- Spain (Peninsula): 2–4 business days
- Balearic Islands: 3–5 business days
- EU countries: 3–7 business days depending on destination
Shipping Costs:
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Order Processing:
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
Delivery Issues:
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
Return & Withdrawal Policy
Right of Withdrawal:
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
Return Conditions:
- Products must be unused, in original condition and packaging.
- Return shipping costs are the responsibility of the customer, unless the product is defective or sent in error.
- Refunds will be issued within 14 days of receiving the returned goods.
Items Excluded from Return:
- Custom or personalized products
- Sealed items that were unsealed after delivery and are unsuitable for return due to hygiene (e.g. cosmetics, personal care)
- Digital content delivered electronically once download or streaming has begun
If you want to return an item, please contact us first to give you detailed instructions.
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Delivery policy
Return policy
