SR/61 Turbocharger

SR/61 Turbocharger

Regular price $1,395.00 Sale

Optimized for 2.5-3.2L displacement SI engines with power outputs between 575 and 750BHP, the SR61 turbocharger is well suited to many high performance modern engine applications. It's 61mm compressor inducer supports flow rates of 72 lb/min, while also providing impressive surge resistance for a wide flow rage; critical for correctly matching the high volumetric efficiency across wide RPM ranges seen with today's modern 4 and 6 cylinder engines.

Optional compressor shroud designs further increase compressor map width, while also improving compressor efficiency closer to surge, resulting in impressive spool characteristics and low to mid range engine torque output. Based around a patented and fully serviceable ball-bearing cartridge featuring second-to-none materials selection throughout, this turbocharger is built to last even under high temperatures and rotor speeds. A wide range of turbine options are available, allowing for a perfect turbine match under virtually all operating conditions.

For most applications, It's standard radial-flow turbine wheel, made of the high-Nickel Inconel 713-C superalloy with either .82 or 1.06 A/R open volute housing is a great fit, however peak turbine efficiency characteristics can be tailored to unique or heavily optimized applications when opting into the SR61/M motorsports selections. The aforementioned serviceable and modular nature of the CHRA design, in conjunction with our commitment to customer satisfaction and product adaptability, allows for repair, modification, or upgrading of your turbocharger at any time, without the unnecessary re-purchasing of a entire new unit.


All of our turbochargers are built to order for your exact requirements and specifications and our current lead time is 2 weeks.  Please email for more information.

All prices are listed in USD, with taxes applicable to Canadian residences.  Please email directly for inquiries and invoicing in CAD.


Compressor choked flow rate : 72lb/min (corrected)

Compressor flow range at 2:1 PR: 16-66 lb/min (corrected)

Max. Compressor efficiency: 75%

Max. Pressure ratio: 4:1

Max. Compressor tip speed: 575 M/S (135,000RPM)

Max. Turbine inlet temp: 985C (cast) / 1025C (316SS)



Billet 2618 Aluminum / 5-axis machined wheel

61mm full-bladed inducer

.70 A/R housing volute

Billet Aluminum backplate

4" compressor inlet / 2.5" compressor outlet



Water-cooled, Ball bearing Cartridge

Integrated oil feed restrictor

Silocone Nitride Ceramic balls

M50 bearing rings

Silver-plated 4340 bearing cages



Inconel 713-C turbine wheel w/ 4140 chromoly shaft

68mm inducer diameter

.82 or 1.06 A/R housing Volute

"T3" inlet flange

4 bolt or V-band 3" turbine discharge flange

Optional features:

Billet ported shroud compressor inlet

Adjustable compressor sound production (quiet operation, or audible compressor noise)

Mixed flow turbine blade geometry for turbine efficiency optimization

316 stainless V-band inlet/outlet 1.06 A/R turbine housing

"T4" inlet .86 A/R turbine housing (3" V-band discharge flange)

Twin-scroll "T4" inlet 1.06 A/R turbine housing (3" V-band discharge flange)

Cerakote Ceramic turbine housing coating

Custom anodizing of any billet aluminum components