Drag Specialties Twin Cam Piston Kit +0.010" Oversize
Drag Specialties Twin Cam Piston Kit +0.010" Oversize
About this product
About this product
The Drag Specialties Twin Cam Piston Kit with a +0.010" oversize bore is engineered to restore your motorcycle's engine performance with OEM-quality precision. Crafted from durable cast aluminum alloy, this piston kit provides a reliable and cost-effective solution for rebuilding or repairing your Twin Cam motor.
Description
This premium Drag Specialties Piston Kit is specifically designed for Twin Cam motors, offering a robust 9.0:1 compression ratio that ensures consistent power delivery and engine efficiency. Each kit features a precise 3.750" bore size with a +0.010" oversize, making it an ideal choice for engines requiring a slight bore increase during a rebuild. Manufactured from high-grade cast aluminum alloy, these pistons meet or exceed original equipment standards for durability and performance. They are an excellent OEM replacement option, providing the quality and fitment you expect for a smooth restoration. The kit includes two pistons, along with the necessary wrist pins and clips, simplifying the installation process and ensuring a complete assembly right out of the box.
Features & Highlights
- OEM-Quality Construction: Engineered from robust cast aluminum alloy, these pistons offer exceptional durability and reliability, matching original equipment standards for a dependable engine rebuild.
- Optimized for Twin Cam Motors: Specifically designed for Twin Cam engines, ensuring perfect fitment and compatibility for seamless replacement or upgrade.
- Enhanced Compression Ratio: Delivers a strong 9.0:1 compression ratio, contributing to efficient combustion and responsive power delivery for your motorcycle.
- Complete Kit for Easy Installation: Each package includes two pistons, two wrist pins, and all necessary clips, providing a comprehensive solution for your engine overhaul.
- Versatile Ring Compatibility: Designed to accept both OEM and Hastings piston rings, offering flexibility and convenience when selecting your preferred ring set (rings sold separately).
Important to Know
- Piston rings are not included and must be purchased separately. This kit is designed to accept OEM or Hastings piston rings.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Specifications
21930-99-010
Piston Kit
Cast
3,750"
9.0:1
Aluminum Alloy
121 mm
117 mm
217 mm
+0.010"
Replacement
Kit
Reviews


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.
Based in Denmark
Fast customer support
Over 100.000 Products
2-Year Full Warranty
Your peace of mind is our priority. Every product in our shop comes with a comprehensive 2-year warranty, so you can hit the road with full confidence.
Support in Danish, Swedish, German & English
Whether you are upgrading your exhaust or choosing a new helmet, our team of seasoned riders is ready to provide professional guidance for your specific bike.
Free Shipping Over 200€ (EU)
Shop your favorite gear without worrying about extra costs. We offer free shipping on all orders over 200€ (EU), ensuring your parts reach you safely and affordably.
Authorized Parts Europe Dealer
As a certified Parts Europe supplier, we guarantee 100% authentic, high-quality motorcycle parts and accessories directly from the world's leading manufacturers.

