Class 1

Based off of the quad cam four valve (QC4v) engine platform, the 850 h.p. Class 1 race pumps out 850 lb-ft of torque from 2500 to 5250 rpm and delivers 850 horsepower at its 6,350 rpm red line. All of this power and torque comes from 89 posted octane (R+M)/2, (95 RON, global) pump gas.

Photo of Class 1

Based off of the quad cam four valve (QC4v) engine platform, the 850 h.p. Class 1 race pumps out 850 lb-ft of torque from 2500 to 5250 rpm and delivers 850 horsepower at its 6,350 rpm red line. All of this power and torque comes from 89 posted octane (R+M)/2, (95 RON, global) pump gas.

  • Original

    Designed from the ground up by Mercury Racing engineers, the Class 1 was developed specifically for UIM Class 1 offshore race competition.

  • Durable

    The 32 valve quad cam valve train offers extreme durability at high horsepower and engine speeds so you can be confident in knowing that the engine can handle anything you can.

  • Drivability

    The long flat torque curve of the engine combined with Digital Throttle and Shift allows the Class 1  to rocket you to speed with the smoothness and ease of a high-end luxury vehicle throughout the full RPM range.  (image / video from PLM to highlight)

  • System Engineered

    Engines, controls, transmissions, drives and propellers are designed to work as an integrated system with the vessel.

Compatible with

Specifications

The Class 1’s fuel calibration is unique for its application, but it’s function is very similar. It shifts just as sweetly and throttles just as effortlessly as it’s QC4v siblings. It features an integrated, water-cooled twin turbo exhaust system. The digitally modulated boost control is employed to handle the engines’ massive, flat torque line. And, as with all QC4v engines, The Class 1 is drive-by- wire and features an electronically shifted transmission.

The Class 1 is available with the M6 drive with gear ratios from 1.15.1 to 1.42:1 or as an engine only.

With 11 color options available and four different components that can be painted — Induction & Exhaust, Base Engine, Transom, and Drive —owners can mix and match to create literally thousands of different custom color combinations.

  • 9.0L – 90 degree DOHC V-8
  • Aluminum block and heads for reduced weight
  • Designed/Developed/Produced by Mercury Racing
  • Durable NiCom® coated aluminum cylinder bores
  • NiComcoating improves heat transfer
  • and durability
  • Quad cam, four valve (QC4v) design optimizes power and torque throughout the engine operating RPM range
  • Overhead cam design extends the operating rpm range
  • Fuel efficiency rewards of 20 to 30% vs. similarly rated engines
  • Improved durability
  • Twin, water cooled turbochargers yield better performance, fuel economy and sound quality and reduce noise
  • Closed Cooled
  • Enhanced corrosion resistance and improved engine cooling
  • Dressed to Thrill
  • Multiple engine and drive color options
Technical Contact

If you have a question that’s not answered in our FAQs or you need additional information, please contact us at the phone numbers listed below.

Mercury Racing Technical Services Hours
Monday through Friday
7:30 a.m. – 4:30 p.m.
(Central Time)

Outboard & Sterndrive Consumer Affairs
(920) 924-2088
(Calls may be recorded for quality purposes)

Mercury Racing Product Technical Publications
Service manuals, parts manuals; operation, maintenance, and warranty manuals.
(920) 929-5110
FAX: 920-929-4894

Merchandise 

From Our Blog

Mercury Racing Powers Team Abu Dhabi to Class 1 World Championship!

American offshore racing veterans Gary Ballough (driver) and Johnny Tomlinson (throttles) piloted Abu Dhabi #6, a MTI catamaran powered by twin Mercury Racing Class 1 Race sterndrives, to win the 2015 Class 1 World Championship! The season finale event took place on the teams' home waters as part of the Abu Dhabi Grand Prix, the final event for the 2015 UIM Class …

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Revised. Refreshed. Rejuvenated.

We are very excited to announce enhancements made to the Mercury Racing website including an all-new QC4v Refresh page. The revised home page features slider images for enhanced navigation to feature pages including Automotive crate engines, QC4v Refresh, Mercury Racing Propellers, the Verado 400R outboard, Dual Calibration 1550 sterndrive and, of course, the Mercury Racing Blog.  The Latest News section highlights just that; links to …

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High Performance Marine Engines