Big Bore Forged Piston Kit

S&S CYCLE Big Bore Forged Piston Kit

S&S CYCLE
0910-4524
920-0101
The Big Bore Forged Piston Kit enhances engine performance and is compatible with stock rods and cylinders.
Out of Stock
€456.90
VAT included
This product is currently unavailable.
  Delivery policy

In stock items will be shipped within 1-3 days.

  Return policy

You can return the products within 14 days for a full refund, check our returns policy.

Big Bore Forged Piston Kit

Upgrade your engine performance with the Big Bore Forged Piston Kit. Designed specifically for compatibility with stock rods featuring tapered wristpin ends, this piston kit ensures a precise fit and enhanced durability.

  • Pistons are compatible with stock rods with tapered wristpin ends
  • Stock cylinders may be bored to accommodate larger piston
  • Bore cylinders to nominal diameter +/- 0.0005" for correct clearance

Maximize the efficiency of your ride while maintaining the integrity of your Harley-Davidson engine.

: 0910-4524
Out of Stock

Data sheet

Riding Style
Street
Units
Kit
Style
Big Bore
Bore - Oversize
Standard
Piston Material
Forged
Bore Size Imperial
3.937"
Stroke Length Imperial
4"
Compression Ratio Imperial
10.3:1
Displacement
98"
Bore Oversize - Imperial
Standard

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.