MR17 | VORTEX | PRO Kart Racing Engines | Stock & Blueprinted

$2,099.00 USD

Sale Sold out

Shipping calculated at checkout.

Drive type Mini Rok (60CC) Rok VLR (100CC) Rok GP (125CC) Rok Shifter (125CC)

Type NEW (STOCK) BLUEPRINTED (RACE PREP) USED

Vortex Kart Racing Engines — New Stock & Blueprinted Race Prep

MR17 tuned Vortex engines, developed under the DRIVEN partnership (formerly Zanella Racing), are built for competitors running USPKS, SKUSA, STARS Nationals, and regional series throughout the USA. Available in New Stock and Blueprinted Race Prep configurations across the Vortex ROK lineup — from Mini ROK to ROK Shifter.

This is a performance-first program for drivers and programs that prioritize results, reliability, and expert support over entry-level price points.

All engines include shipping.

Engine Configurations

New (Stock) — Complete Package

Every new engine purchase ships as a complete, ready-to-install package including:

Engine
Wiring harness
Clutch
Front sprocket
Exhaust
Air filter
10% discount on all future rebuilds, applied to your engine serial number

MR17 Blueprinted (Race Prep) — Complete Package

Full complete package (same as Stock, listed above)
Dyno-tested and calibrated — every engine ships with a verified HP and torque dyno sheet
Blueprinted for maximum legal performance — optimized within class rules
Nationally proven race prep trusted by podium-level programs
Trackside support available at select national events — confirm availability at checkout
10% discount on all future rebuilds, applied to your engine serial number

Used (Engine & Carb Only)

Used engines include the engine and carburetor only — no additional components. Bore size is approximately 3–4 sizes from maximum legal bore, meaning these engines are at the top of their performance life. Recommended for experienced programs running them as dedicated racing engines.

New Engine Purchase Benefit

Every new engine purchase — Stock or Blueprinted — includes a 10% discount on your next rebuild, tied to the registered engine serial number and valid for all future rebuilds serviced through DRIVEN.

Engine Specifications & Class Fitment

Model	Displacement	Max Power	Max Torque	Max RPM	Driver Class
ROK Mini	60cc	10 HP @ 11,000 RPM	6.5 Nm @ 9,000 RPM	15,500 RPM	Mini / Young Drivers
ROK VLR	100cc	20 HP @ 9,800 RPM	1.4 Kgm @ 9,600 RPM	16,000 RPM	Junior / Senior
ROK GP	125cc	—	20.2 Nm @ 11,500 RPM	15,000 RPM	Junior
ROK Shifter	125cc	43 HP @ 13,900 RPM	—	14,000 RPM	Shifter

Engine Notes

ROK Mini

The ROK Mini is dedicated to young drivers entering competition. Designed to be safe and approachable, it allows drivers to build confidence and develop technique without unnecessary complexity — while still delivering genuine competitive performance.

ROK VLR

The VLR is engineered around three core principles: reliability, ease of operation, and low maintenance cost. Designed for straightforward inspection and servicing, it is an ideal platform for programs focused on consistent, cost-effective competition.

ROK GP — Limited Availability

The ROK GP has been replaced by the new ROK SV. This is your last opportunity to purchase one of the most proven engines in karting history. The ROK GP Junior immediately established itself on the world stage for its spirited performance, practical structure, and high reliability — engineered to deliver competitive output while maintaining durability across a full season.

ROK Shifter

The ROK Shifter was developed for drivers who want to compete in a gearbox category without sacrificing the core ROK philosophy: stable regulations and controlled costs over time. At 43 HP and 125cc, it delivers serious performance in a platform built for long-term competitive viability.

Lead Times

New (Stock) — approximately 1 week (subject to order volume)
Blueprinted (Race Prep) — approximately 2 weeks (subject to order volume)

Service Area

Primary service covers events across the United States. International orders are available on request — contact us directly to discuss your program needs.

Frequently Asked Questions

What is the difference between Stock and MR17 Blueprinted?

Stock engines are factory-fresh and ready to race within class specifications. MR17 blueprinting involves detailed hand-finishing, dyno calibration, and tuning to maximize performance within class rules.

Are all Blueprinted engines dyno tested?

Yes. Every MR17 Blueprinted engine is dyno-tested and ships with a dyno sheet showing horsepower and torque output.

What does a Used engine include?

Used engines include the engine and carburetor only. Bore size is 3–4 sizes from maximum legal bore — these are engines at the top of their performance life, suited for programs running them as dedicated race engines.

How does the 10% rebuild discount work?

All new engine purchases — Stock or Blueprinted — qualify for a 10% discount on future rebuilds. The discount is registered to your engine serial number and applies to all rebuilds serviced through DRIVEN.

Are these engines legal for SKUSA, USPKS, and STARS?

All Vortex ROK engines listed are prepared to meet the specifications of SKUSA, USPKS, STARS, and most major karting series. Always verify against your current series rulebook for any updates.