{"product_id":"polarstar-gearbox-shim-set-0157-hpa","title":"Polarstar Gearbox Shim Set for Cylinder Conversion Kits (Size: 0.157\")","description":"\u003ch2\u003ePolarStar Gearbox Shim Set for HPA Cylinder Conversion Kits (0.157\")\u003c\/h2\u003e\n\u003cp\u003eWhen it comes to maximizing the performance of your HPA setup, even the smallest components make a big difference. The \u003cstrong\u003ePolarStar Gearbox Shim Set 0.157 HPA\u003c\/strong\u003e is a precision upgrade designed to \u003cstrong\u003eeliminate engine movement inside your gearbox\u003c\/strong\u003e, ensuring consistent air seal, reliable BB feeding, and peak performance from your HPA system.\u003c\/p\u003e\n\u003cp\u003eBuilt specifically for PolarStar cylinder conversion kits, this shim set is an essential addition for anyone running \u003cstrong\u003eF2, F1, JACK, or Kythera systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eEliminate Engine Movement for Consistent Performance\u003c\/h2\u003e\n\u003cp\u003eOne of the most overlooked issues in HPA builds is \u003cstrong\u003eslight engine movement inside the gearbox shell\u003c\/strong\u003e. Due to variations in gearbox pin sizes across manufacturers, even high-end builds can suffer from unwanted shifting.\u003c\/p\u003e\n\u003cp\u003eThe PolarStar shim set solves this problem by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSecuring the HPA engine firmly in place\u003c\/li\u003e\n\u003cli\u003ePreventing forward and backward movement\u003c\/li\u003e\n\u003cli\u003eStabilizing the cylinder within the gearbox shell\u003c\/li\u003e\n\u003cli\u003eMaintaining consistent alignment during operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis results in \u003cstrong\u003eimproved reliability and repeatable shot performance\u003c\/strong\u003e, especially in high-demand builds.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eImprove Air Seal \u0026amp; BB Feeding\u003c\/h2\u003e\n\u003cp\u003eWhen your HPA engine shifts, it directly affects how far the nozzle extends into the hop-up chamber. Even minor inconsistencies can lead to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePoor BB seating\u003c\/li\u003e\n\u003cli\u003eInconsistent air seal\u003c\/li\u003e\n\u003cli\u003eFPS fluctuations\u003c\/li\u003e\n\u003cli\u003eReduced accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBy locking the engine into position, these shims help maintain \u003cstrong\u003eoptimal nozzle alignment\u003c\/strong\u003e, ensuring:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConsistent air compression\u003c\/li\u003e\n\u003cli\u003eReliable BB feeding\u003c\/li\u003e\n\u003cli\u003eImproved shot-to-shot consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a \u003cstrong\u003esimple upgrade with a major impact on performance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePrecision Fit for Common Gearboxes\u003c\/h2\u003e\n\u003cp\u003eThe 0.157\" shim size is designed to match \u003cstrong\u003ecommon gearbox pin tolerances\u003c\/strong\u003e, making installation straightforward and effective.\u003c\/p\u003e\n\u003cp\u003eFitment benefits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with most standard gearbox shells\u003c\/li\u003e\n\u003cli\u003eDesigned for easy drop-in installation\u003c\/li\u003e\n\u003cli\u003eMultiple sizes available for fine-tuning your setup\u003c\/li\u003e\n\u003cli\u003eEnsures a snug and secure fit regardless of manufacturer variation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis flexibility allows you to \u003cstrong\u003edial in your build with precision\u003c\/strong\u003e, no matter your platform.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDurable Brass Construction\u003c\/h2\u003e\n\u003cp\u003eConstructed from \u003cstrong\u003ehigh-quality brass\u003c\/strong\u003e, these shims are built to withstand repeated use and maintain their integrity over time.\u003c\/p\u003e\n\u003cp\u003eMaterial advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStrong and wear-resistant\u003c\/li\u003e\n\u003cli\u003eMaintains shape under pressure\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant for long-term durability\u003c\/li\u003e\n\u003cli\u003eReliable performance in all conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis ensures your gearbox remains \u003cstrong\u003estable and consistent even under heavy use\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible with All PolarStar Cylinder Kits\u003c\/h2\u003e\n\u003cp\u003eThe shim set is fully compatible with all major PolarStar cylinder conversion systems, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePolarStar F2\u003c\/li\u003e\n\u003cli\u003ePolarStar F1\u003c\/li\u003e\n\u003cli\u003ePolarStar JACK\u003c\/li\u003e\n\u003cli\u003ePolarStar Kythera\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it a \u003cstrong\u003euniversal solution\u003c\/strong\u003e for PolarStar users looking to optimize their setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Shimming Matters in HPA Builds\u003c\/h2\u003e\n\u003cp\u003eUnlike traditional AEGs, HPA engines rely heavily on \u003cstrong\u003eprecise alignment and consistency\u003c\/strong\u003e. Even minor internal movement can compromise performance.\u003c\/p\u003e\n\u003cp\u003eBy installing the correct shim size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou eliminate mechanical inconsistencies\u003c\/li\u003e\n\u003cli\u003eImprove overall efficiency\u003c\/li\u003e\n\u003cli\u003eExtend the lifespan of your components\u003c\/li\u003e\n\u003cli\u003eAchieve more predictable and accurate shots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt’s a small upgrade that delivers \u003cstrong\u003eprofessional-level results\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick \u0026amp; Easy Installation\u003c\/h2\u003e\n\u003cp\u003eThe PolarStar shim set is designed for \u003cstrong\u003esimple installation\u003c\/strong\u003e, making it accessible for both beginners and experienced techs.\u003c\/p\u003e\n\u003cp\u003eInstallation highlights:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo complex modifications required\u003c\/li\u003e\n\u003cli\u003eFits directly into gearbox pin areas\u003c\/li\u003e\n\u003cli\u003eFast setup with immediate performance gains\u003c\/li\u003e\n\u003cli\u003eIdeal for tech builds and maintenance upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're building a new HPA setup or refining an existing one, this is a \u003cstrong\u003emust-have tuning component\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePrecision \u003cstrong\u003e0.157\" shim size\u003c\/strong\u003e for common gearbox pins\u003c\/li\u003e\n\u003cli\u003eDurable \u003cstrong\u003ebrass construction\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrevents HPA engine movement inside gearbox\u003c\/li\u003e\n\u003cli\u003eImproves \u003cstrong\u003eair seal and BB feeding consistency\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnhances overall performance and reliability\u003c\/li\u003e\n\u003cli\u003eCompatible with \u003cstrong\u003ePolarStar F2, F1, JACK, and Kythera systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy drop-in installation\u003c\/li\u003e\n\u003cli\u003eDesigned for most standard gearbox shells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFine-Tune Your HPA Performance\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ePolarStar Gearbox Shim Set (0.157\")\u003c\/strong\u003e is a small but critical upgrade that ensures your HPA engine performs at its best. By eliminating internal movement and stabilizing your setup, it delivers \u003cstrong\u003econsistent power, accuracy, and reliability\u003c\/strong\u003e every time you pull the trigger.\u003c\/p\u003e\n\u003cp\u003eFor players serious about performance, this is an essential component in any \u003cstrong\u003ehigh-quality HPA build\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable now at CQCAirsoft.com – dial in your setup and shoot with confidence.\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"Polarstar","offers":[{"title":"Default Title","offer_id":47994888650982,"sku":"25644","price":19.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/9291_polarstar-25644-removebg-preview.png?v=1784175280","url":"https:\/\/ngrwzj-i1.myshopify.com\/products\/polarstar-gearbox-shim-set-0157-hpa","provider":"CQC Airsoft ","version":"1.0","type":"link"}