Carrillo BC1021-035W Bullet Series Forged Piston Set SBC 350 4.035 Bore WISSOTA Legal

The Carrillo BC1021-035W is a high-performance forged steel connecting rod from CP-Carrillo's BC series, featuring a +0.035" oversized big-end bore and fitted with the standard WMC (H11 tool steel) rod bolt. Designed for demanding performance and racing applications, this connecting rod delivers the precision engineering and material quality that CP-Carrillo has been known for since 1963.

Key Features:

• BC Series Construction: Forged from CP-Carrillo's proprietary Carrilloy steel — a chrome, nickel, moly, vanadium alloy meeting all VAR (Vacuum Arc Re-Melt) ASTM standards
• +0.035" Oversized Big-End Bore: Designed for use in engines requiring a bored/reconditioned crankshaft journal, allowing precise bearing fitment during rebuilds
• WMC H11 Tool Steel Rod Bolt: Features an Ultimate Tensile Strength (UTS) of 220,000 PSI; rated for approximately 15–18 torque cycles
• Asymmetrical Thread Design: WMC bolts use asymmetrical threads for evenly distributed thread engagement, improving clamp load and fastener fatigue life
• Multi-Stage Quality Inspection: Each rod is magnafluxed at least twice, Rockwell tested for heat treat validation, and completed with a controlled shot peen operation
• Laser-Serialized for Traceability: Every rod is laser-marked with a job number and ships with a specification card listing critical dimensions, weights, and bolt installation data
• Made in the USA: Manufactured at CP-Carrillo's state-of-the-art facility in Irvine, California

The BC1021-035W is built for engine builders who require race-proven connecting rods with the confidence of CP-Carrillo's stringent manufacturing standards. Each rod is supplied with assembly lubricant and a spec card — use the bolt stretch method (preferred over torque) for proper installation.