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Vortex VLR 100cc engine
  • Vortex VLR 100cc engine
  • Vortex VLR 100cc engine
100cc Vortex VLR Sr. - New Engine

100cc Vortex VLR Sr. - New Engine

$3,350.00

Key features

  • Race Ready & Blueprinted
  • Dyno Tested
  • Fast Shipping

Vortex VLR Senior — 100cc Entry-Level Race Engine

The Vortex VLR is a 100cc air-cooled two-stroke kart engine designed as an affordable entry point into competitive Senior kart racing. Featuring reed valve induction, electric start, and a Tillotson carburetor, the VLR delivers reliable power and excellent parity for close racing. The VLR is the standard engine for ROK Cup USA VLR classes and is growing rapidly in popularity at club and regional events.

What’s Included

  • New Vortex VLR engine in Senior configuration
  • Blueprinting and dyno break-in by Revolutionz
  • Carburetor pairing and optimization
  • Complete kit with all necessary components
  • Dyno data sheet included

Why Revolutionz? We apply the same championship-level preparation to every VLR we sell. Blueprinted, dyno-tested, and shipped race-ready from Oceanside, California.
The Vortex ROK VLR is the perfect platform for entry-level drivers. Superior performance with lower maintenance and electric start - all at a cost racers can afford. Comes complete and ready to race.
Engine Info +
Manufacturer
Vortex
Model
VLR
Displacement
100cc
Engine Type
Tag Motor
Class Compatibility
Senior VLR (ages 15+)
Restriction Note
Senior version - unrestricted for full performance
Key Features +
  • Electric start for easy operation
  • Air-cooled design reduces complexity and maintenance
  • Pre-jetted carburetor ready to run
  • Proven reliability in competitive racing
  • Lower cost of ownership vs water-cooled engines
  • Cast iron cylinder CNC worked for durability
  • Reed valve intake for consistent power delivery
  • Suitable for multiple age classes (Jr/Sr/Masters)
  • Backed by Vortex/OTK quality and support
  • Complete with all necessary components
What’s Included +
  • Complete engine assembled and tested
  • Integrated electric starter system
  • Carburetor pre-jetted
  • New NGK B10 EG spark plug installed
  • Mounting hardware kit
  • Owner's manual and technical documentation
  • Break-in instructions and procedures
  • Jetting guide for altitude/temperature adjustments
  • Vortex intake silencer
  • Reed valve pre-installed
Technical Specifications +
Engine Construction
Single-cylinder 2-stroke
Actual Displacement
98.53cc (homologated as 100cc)
Bore & Stroke
48.20mm x 54.00mm
Cooling System
Air-cooled system
Starter Type
Integrated electric starter
Clutch Type
Centrifugal dry-clutch
Carburetor
Tillotson HW-38A butterfly valve 24mm with Aero air box
Ignition System
Selettra analogic ignition system
Engine Weight
32 lbs (14.5 kg)
Valve System
Reed valve intake
Fuel Mix Ratio
4% oil mix (40cc of 2-stroke oil per 1000cc fuel). Use high-quality synthetic oil for kart engines.
Support +
Support Notes
Free setup consultation included with purchase. Contact Revolutionz USA for jetting help, carburetor tuning, maintenance advice, and technical support.

Recommended maintenance schedule:
- Spark plug check: Every 5 hours
- Carburetor cleaning: After every race day
- Exhaust cleaning: Every 10 hours
- Piston replacement: Every 60 liters of fuel
- Connection rod: Every 400 liters

Email: support@revolutionzusa.com
Phone: [Add your phone number]