Billet compressor wheel equipped Borg Warner S300 series turbos with special designed exhaust turbines are the heart of BD’s R600 and R650 kits, offering the most air flow available in this size class turbocharger. BD Engineering tested and designed these turbo kits with engine power increases of 125-275 hp. Featuring 66mm and 67mm Extended tip Billet wheels that deliver up to 1250cfm, a 6-pad bronze thrust bearing, turnbuckle adjustable HD sprung waste gates, and BD’s straight or 90-degree compressor housings that have velocity inducers. (800-887-5030/www.dieselperformance.com)