Harddrive Twin Cam Cylinders - Tc103 Cylinder 3.875" Bore Black W/Machined Fins… — Harley-Davidson (2007-2017)

Harddrive Twin Cam cylinder with 3.875" bore, featuring a powder-coated black finish and machined aluminum fins for a stock appearance. Aluminum construction with cast iron sleeves, sold individually and requiring finish honing and piston matching before installation.

Features

• Powder-coated black finish with machined aluminum fins
• Aluminum cylinder with cast iron sleeve
• 3.875" bore
• Sold individually — requires finish honing and piston matching
• Suitable for stock replacement or displacement increase

Specifications

• Brand: Harddrive
• Manufacturer Part #: 88461
• UPC: 191361122354
• Bore: 3.875"
• Length: 10 in
• Width: 10.2 in
• Height: 9.6 in
• Weight: 10.015 lbs
• Country of Origin: Japan

Fitment

Fits Twin Cam V-twin motorcycles. Designed for Harley-Davidson and Indian Motorcycle applications.

Frequently Asked Questions

Do I need to hone and match these cylinders to pistons?

Yes — cylinders are sold individually and must be finish-honed and matched to your pistons before installation. Pistons are sold separately.

Can I use these for a displacement increase?

Yes — the 3.875" bore supports both stock replacement and displacement-increase builds when matched with appropriate pistons.

Are these cylinders a complete set, or do I need to buy pairs?

Each cylinder is sold individually. You will need one cylinder per side, and pistons must be ordered separately and matched during honing.

What's the difference between these and OEM cylinders?

Harddrive cylinders offer a cost-effective alternative with the same aluminum-with-cast-iron-sleeve construction and OEM-style machined fin appearance.