{"product_id":"mr17-vortex-pro-kart-racing-engines-stock-blueprinted","title":"MR17 | VORTEX | PRO Kart Racing Engines | Stock \u0026 Blueprinted","description":"\u003ch2\u003eVortex Kart Racing Engines — New Stock \u0026amp; Blueprinted Race Prep\u003c\/h2\u003e\u003cp\u003eMR17 tuned Vortex engines, developed under the DRIVEN partnership (formerly Zanella Racing), are built for competitors running \u003cstrong\u003eUSPKS, SKUSA, STARS Nationals\u003c\/strong\u003e, 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.\u003c\/p\u003e\u003cp\u003eThis is a performance-first program for drivers and programs that prioritize results, reliability, and expert support over entry-level price points.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAll engines include shipping.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eEngine Configurations\u003c\/h3\u003e\u003ch4\u003eNew (Stock) — Complete Package\u003c\/h4\u003e\u003cp\u003eEvery new engine purchase ships as a complete, ready-to-install package including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine\u003c\/li\u003e\n\u003cli\u003eWiring harness\u003c\/li\u003e\n\u003cli\u003eClutch\u003c\/li\u003e\n\u003cli\u003eFront sprocket\u003c\/li\u003e\n\u003cli\u003eExhaust\u003c\/li\u003e\n\u003cli\u003eAir filter\u003c\/li\u003e\n\u003cli\u003e10% discount on all future rebuilds, applied to your engine serial number\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eMR17 Blueprinted (Race Prep) — Complete Package\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFull complete package (same as Stock, listed above)\u003c\/li\u003e\n\u003cli\u003eDyno-tested and calibrated — every engine ships with a verified HP and torque dyno sheet\u003c\/li\u003e\n\u003cli\u003eBlueprinted for maximum legal performance — optimized within class rules\u003c\/li\u003e\n\u003cli\u003eNationally proven race prep trusted by podium-level programs\u003c\/li\u003e\n\u003cli\u003eTrackside support available at select national events — confirm availability at checkout\u003c\/li\u003e\n\u003cli\u003e10% discount on all future rebuilds, applied to your engine serial number\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eUsed (Engine \u0026amp; Carb Only)\u003c\/h4\u003e\u003cp\u003eUsed 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.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eNew Engine Purchase Benefit\u003c\/h3\u003e\u003cp\u003eEvery new engine purchase — Stock or Blueprinted — includes a \u003cstrong\u003e10% discount on your next rebuild\u003c\/strong\u003e, tied to the registered engine serial number and valid for all future rebuilds serviced through DRIVEN.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eEngine Specifications \u0026amp; Class Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDisplacement\u003c\/th\u003e\n\u003cth\u003eMax Power\u003c\/th\u003e\n\u003cth\u003eMax Torque\u003c\/th\u003e\n\u003cth\u003eMax RPM\u003c\/th\u003e\n\u003cth\u003eDriver Class\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eROK Mini\u003c\/td\u003e\n\u003ctd\u003e60cc\u003c\/td\u003e\n\u003ctd\u003e10 HP @ 11,000 RPM\u003c\/td\u003e\n\u003ctd\u003e6.5 Nm @ 9,000 RPM\u003c\/td\u003e\n\u003ctd\u003e15,500 RPM\u003c\/td\u003e\n\u003ctd\u003eMini \/ Young Drivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROK VLR\u003c\/td\u003e\n\u003ctd\u003e100cc\u003c\/td\u003e\n\u003ctd\u003e20 HP @ 9,800 RPM\u003c\/td\u003e\n\u003ctd\u003e1.4 Kgm @ 9,600 RPM\u003c\/td\u003e\n\u003ctd\u003e16,000 RPM\u003c\/td\u003e\n\u003ctd\u003eJunior \/ Senior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROK GP\u003c\/td\u003e\n\u003ctd\u003e125cc\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e20.2 Nm @ 11,500 RPM\u003c\/td\u003e\n\u003ctd\u003e15,000 RPM\u003c\/td\u003e\n\u003ctd\u003eJunior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eROK Shifter\u003c\/td\u003e\n\u003ctd\u003e125cc\u003c\/td\u003e\n\u003ctd\u003e43 HP @ 13,900 RPM\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e14,000 RPM\u003c\/td\u003e\n\u003ctd\u003eShifter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eEngine Notes\u003c\/h3\u003e\u003ch4\u003eROK Mini\u003c\/h4\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch4\u003eROK VLR\u003c\/h4\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch4\u003eROK GP — Limited Availability\u003c\/h4\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch4\u003eROK Shifter\u003c\/h4\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eLead Times\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew (Stock)\u003c\/strong\u003e — approximately 1 week (subject to order volume)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlueprinted (Race Prep)\u003c\/strong\u003e — approximately 2 weeks (subject to order volume)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eService Area\u003c\/h3\u003e\u003cp\u003ePrimary service covers events across the \u003cstrong\u003eUnited States\u003c\/strong\u003e. International orders are available on request — contact us directly to discuss your program needs.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eWhat is the difference between Stock and MR17 Blueprinted?\u003c\/h4\u003e\u003cp\u003eStock 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.\u003c\/p\u003e\u003ch4\u003eAre all Blueprinted engines dyno tested?\u003c\/h4\u003e\u003cp\u003eYes. Every MR17 Blueprinted engine is dyno-tested and ships with a dyno sheet showing horsepower and torque output.\u003c\/p\u003e\u003ch4\u003eWhat does a Used engine include?\u003c\/h4\u003e\u003cp\u003eUsed 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.\u003c\/p\u003e\u003ch4\u003eHow does the 10% rebuild discount work?\u003c\/h4\u003e\u003cp\u003eAll 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.\u003c\/p\u003e\u003ch4\u003eAre these engines legal for SKUSA, USPKS, and STARS?\u003c\/h4\u003e\u003cp\u003eAll 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.\u003c\/p\u003e\u003ch4\u003eIs trackside support available?\u003c\/h4\u003e\u003cp\u003eMR17 trackside support is available at select national and regional events. Confirm availability for your event at checkout or contact us directly.\u003c\/p\u003e","brand":"MR17 | Karting Engines","offers":[{"title":"Mini Rok (60CC) \/ NEW (STOCK)","offer_id":47860371226781,"sku":null,"price":2099.0,"currency_code":"USD","in_stock":true},{"title":"Mini Rok (60CC) \/ BLUEPRINTED (RACE PREP)","offer_id":47860371259549,"sku":null,"price":2999.0,"currency_code":"USD","in_stock":true},{"title":"Mini Rok (60CC) \/ USED","offer_id":47860371292317,"sku":null,"price":2600.0,"currency_code":"USD","in_stock":true},{"title":"Rok VLR (100CC) \/ NEW (STOCK)","offer_id":47860371325085,"sku":null,"price":2699.0,"currency_code":"USD","in_stock":true},{"title":"Rok VLR (100CC) \/ BLUEPRINTED (RACE PREP)","offer_id":47860371357853,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true},{"title":"Rok VLR (100CC) \/ USED","offer_id":47860371390621,"sku":null,"price":2999.0,"currency_code":"USD","in_stock":true},{"title":"Rok GP (125CC) \/ USED","offer_id":47860371423389,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Rok Shifter (125CC) \/ NEW (STOCK)","offer_id":47860371456157,"sku":null,"price":4730.0,"currency_code":"USD","in_stock":true},{"title":"Rok Shifter (125CC) \/ BLUEPRINTED (RACE PREP)","offer_id":47860371488925,"sku":null,"price":5680.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/6501\/8013\/files\/rok-vlr-2.png?v=1776904400","url":"https:\/\/drivenracing.shop\/products\/mr17-vortex-pro-kart-racing-engines-stock-blueprinted","provider":"DRIVEN | Racing Shop","version":"1.0","type":"link"}