Carrillo BHM107-6 High-Performance Forged Piston Kit for Harley Twin Cam 107ci

The Carrillo BHM107-6 is a high-performance forged piston kit engineered for big bore conversions on 2007-later Harley-Davidson Twin Cam 96ci and 103ci engines. This precision-crafted piston features a 3.937-inch bore and is designed for 4.375-inch stroke applications, delivering 107 cubic inches of displacement with an 11.0:1 compression ratio.

Key Specifications:

• Bore: 3.937 inches
• Stroke: 4.375 inches
• Rod Length: 7.667 inches
• Compression Height: 1.085 inches
• Compression Ratio: 11.0:1 (based on 85cc head volume)
• Piston Dome Volume: +6cc dome with two valve reliefs
• Displacement: 107 cubic inches

Premium Construction and Features:

• Constructed from 2618 forged and heat-treated aluminum alloy for exceptional strength and durability
• Precision-machined using advanced 5-axis CNC techniques and sophisticated 3D modeling
• Forced pin oiling system for enhanced lubrication
• Advanced cam and barrel skirt profiles for reduced friction
• Contact reduction grooves and accumulator groove design
• Floating wrist pin style with retainers included
• High-performance ring set: Steel top ring with plasma-moly facing and cast iron second ring
• Chromoly wrist pins with wire locks included
• Piston balance within 1 gram tolerance

Compatibility:

Designed for 2007-2017 Harley-Davidson Twin Cam engines with 4.375-inch stroke. Works with both stock tapered connecting rods and aftermarket H-beam rods. Ideal for big bore conversion projects upgrading 96ci or 103ci engines to 107ci displacement.

Each Carrillo piston undergoes rigorous quality control and detailed inspection to ensure the flattest ring grooves and tightest tolerances in the industry. Manufactured in Irvine, California, USA, combining cutting-edge technology with traditional craftsmanship. Kit is sold per cylinder; quantity of 2 recommended for complete engine rebuild.