{"product_id":"banshee-athena-cp-carrillo-pistons-68mm-big-bore-421cc-stroker-crank-domes-cub","title":"Banshee Athena CP-Carrillo Pistons 68mm Big Bore 421cc Stroker Crank \u0026 Domes Cub","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.001pt; color: transparent;\"\u003eS410485301023, S410485301024, P400485100024, 573M06800, 4111, CBK0044, PD300, M16800, 808812, 822154, BR8ES, K018, 10-301, B1005, 21.2020, 8101D200, 2GU-11311-00-00, 2GU-11321-00-00,2GU-11181-00-00, 2GU-11631-00-94, 2GU-11610-01-00, 4L0-11633-00-00, 93450-17129-00, 93310-316D6-00,3GG-11351-02-00, B0627020F, B0627018AFM, B0627015F, 99530-10114-00, IR019018AFM, MNB160210225A, 8055681300989, 29L-11400-30-00 29L-11412-00-00 29L-11401-09-00, 29L-11442-10-00, 93306-30571-00, 93310-523D2-00, 90209-22257-00, 29L-11651-00-00, 93306-30549-00 93103-25108-00\u003c\/span\u003e\u003c\/p\u003e \u003cdiv style=\"max-width:800px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;line-height:1.5;color:#222;\"\u003e \u003ch2 style=\"text-align:center;font-size:26px;margin:0 0 12px 0;\"\u003e \u003cstrong\u003e💥 Banshee Athena 421cc CP-Carrillo Big Bore Stroker Kit 💥\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🚀 Unleash Dominant Power: The Ultimate +4mm Stroker Athena Kit on the Market!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis is the \u003cstrong\u003eTop Of The Line +4mm Stroker Athena Kit On The Market\u003c\/strong\u003e—a complete top-to-bottom motor rebuild that will compete with a Cheetah Cub at a fraction of the cost! Unleash the full potential of your Yamaha Banshee 350 with this \u003cstrong\u003e421cc Stroker Conversion Rebuild Kit\u003c\/strong\u003e, meticulously assembled to deliver unparalleled performance and reliability. With proper tuning on pump gas, you can easily hit 95+ hp with this kit! This is not just a rebuild; it's a complete transformation designed for serious riders who demand aggressive power and blistering speed.\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e💪 Uncompromising Quality: Athena Cylinders, Forged Pistons \u0026amp; Heavy-Duty Crank!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis comprehensive rebuild kit features only the highest-quality components. It includes a pair of \u003cstrong\u003eAthena 68mm Banshee Cylinders\u003c\/strong\u003e with larger port windows for more power, larger water jackets for better cooling, and triple exhaust ports. The kit's power comes from a pair of \u003cstrong\u003eNEW CP Carrillo 68mm Big Bore Forged Stroker Pistons\u003c\/strong\u003e, complete with rings, pins, and clips. The bottom end is fortified with a \u003cstrong\u003eHot Rods Complete +4mm Stroker Crankshaft\u003c\/strong\u003e, which comes pre-welded, trued, and ready to install. For a secure seal, a \u003cstrong\u003eCometic One Piece Custom Base Gasket\u003c\/strong\u003e, a \u003cstrong\u003eComplete Banshee Gasket Kit\u003c\/strong\u003e, and a \u003cstrong\u003eComplete Banshee Engine Seal Kit\u003c\/strong\u003e are included. The package is topped off with a \u003cstrong\u003ePro Design Cool Head with Head Stud Kit and O-Ring Kit\u003c\/strong\u003e, \u003cstrong\u003e22cc Big Bore Domes\u003c\/strong\u003e (special custom cut, no spacer required), and a \u003cstrong\u003eBPRATV Talon Titanium Acorn Cap Nuts\u003c\/strong\u003e to secure it all.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eAthena 68mm Banshee Cylinders (Pair)\u003c\/strong\u003e with Triple Exhaust Ports.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eNEW CP Carrillo 68mm Big Bore Forged Stroker Pistons (Pair)\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHot Rods Complete +4mm Stroker Crankshaft\u003c\/strong\u003e with 115mm Heavy Duty Rods.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003ePro Design Cool Head\u003c\/strong\u003e with 22cc Big Bore Domes \u0026amp; Head Stud Kit.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eComplete Banshee Gasket Kit\u003c\/strong\u003e \u0026amp; \u003cstrong\u003eComplete Banshee Engine Seal Kit\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Perfect Fit \u0026amp; Seamless Installation: Fits All Yamaha Banshee 350 Models!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis \u003cstrong\u003e421cc Stroker Conversion Rebuild Kit\u003c\/strong\u003e is engineered for a precise, hassle-free engine overhaul on all \u003cstrong\u003eYamaha Banshee YFZ 350 models and years\u003c\/strong\u003e from \u003cstrong\u003e1987 through 2006\u003c\/strong\u003e. As a complete top-to-bottom kit, it is a direct bolt-on solution with no case or head mods required. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e**🚨 Port Timing Is Critical**\u003c\/strong\u003e – this 421cc setup must be ported properly. The Athena port timing is made for a 392cc configuration from the factory. Slapping in a thick base gasket is NOT a real fix and WILL rob your Banshee of its true potential! We recommend using our in-house BPRATV porting service for max performance. Invest in this kit and get a true race-ready setup!\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits \u003cstrong\u003eALL Yamaha Banshee YFZ 350 Models (1987-2006)\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHot Rods +4mm Stroker Crankshaft\u003c\/strong\u003e is true and welded, ready to install.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eNo case or head mods required\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eIncludes extra components like **Titanium Acorn Cap Nuts** and new **NGK Spark Plugs**.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003ePiston runs on \u003cstrong\u003epump or race gas\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e❓ Frequently Asked Questions (FAQ)\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What makes this a \"Complete Top To Bottom Motor Rebuild\" kit?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: This is an all-inclusive kit that covers every critical component for a full engine overhaul. It includes Athena cylinders, CP-Carrillo forged pistons, a Hot Rods +4mm stroker crankshaft, Pro Design cool head and domes, a full gasket and seal kit, and all necessary bearings and studs – addressing both the top and bottom ends.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What displacement is achieved with this kit, and what is its horsepower potential?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: By combining the Athena 68mm cylinders with a +4mm stroker crank, this kit creates a displacement of 421cc. With proper tuning, this setup can easily achieve 95+ horsepower, offering a significant and noticeable power increase over a stock Banshee engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Why is proper port timing critical for this kit, and are case mods required?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Yes, proper port timing is critical. This kit is designed for a 4mm stroke. The Athena cylinders were originally timed for a smaller displacement. Using a thick base gasket to correct this will rob your engine of power. It is crucial to have the cylinders professionally ported to match the 4mm stroke for maximum performance. Fortunately, no case modifications are required for installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What is included in the CP-Carrillo piston kit and the Pro Design Cool Head kit?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: The CP-Carrillo Piston Kit includes a pair of 68mm forged pistons, rings, pins, and clips. The Pro Design Cool Head kit comes with the cool head itself, a head stud kit, O-rings, and two custom 22cc 12-degree billet domes for optimal compression.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🌟 Why Buy from BPRATV? Your Go-To for Yamaha Banshee Performance Parts! 🌟\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eAt BPRATV, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e This Banshee Athena 421cc Big Bore Stroker Kit exemplifies our dedication to providing high-quality, essential components that guarantee your machine's longevity and peak performance. We share your passion for two-stroke power and are committed to ensuring your Banshee screams flawlessly. Trust BPRATV to deliver the parts you need to keep your Banshee performing its best, every single time.\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003eUpgrade your Banshee today \u0026amp; feel the power of a 421cc stroker! 🏁\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBPRATV - The Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBRAPPPPPPPPPP!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;font-size:10px;color:#555;margin:20px 0 0px;\"\u003e© BPRATV LLC\u003c\/p\u003e \u003c\/div\u003e \u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003e* **Banshee 421cc Athena 68mm Big Bore Kit CP Piston Hot Rods +4mm Stroker Crank!** (79 Characters) * **Yamaha Banshee +4mm Stroker Kit Athena 421cc Cylinders CP Pistons Hot Rods NEW!** (80 Characters) * **Banshee CP Carrillo Pistons Big Bore Top End Rebuild Kit Hot Rods Crank Domes!** (80 Characters) * **Yamaha Banshee 421cc CP Carrillo Pro Design Cometic Big Bore Stroker Kit NEW!** (79 Characters) * **Banshee All Years Top Bottom Engine Rebuild Kit +4mm Stroker 421cc BPRATV!** (79 Characters) --- **Recommended eBay Product Category:** * Parts \u0026amp; Accessories \u0026gt; ATV, Side-by-Side \u0026amp; UTV Parts \u0026amp; Accessories \u0026gt; Engine \u0026amp; Drivetrain \u0026gt; Complete Engines \u0026amp; Kits --- **Recommended Secondary Category:** * Parts \u0026amp; Accessories \u0026gt; ATV, Side-by-Side \u0026amp; UTV Parts \u0026amp; Accessories \u0026gt; Engine \u0026amp; Drivetrain \u0026gt; Cylinders --- **H1 Headings for Product Page (max 7 words):** * Banshee 421cc Stroker Kit * Athena 68mm Cylinder Kit * CP-Carrillo Pistons \u0026amp; Crank * Pro Design Cool Head * Complete Banshee Motor Rebuild --- **Broad Match Keywords:** * Banshee 421cc stroker kit * Banshee Athena 68mm cylinders * Banshee CP Carrillo pistons * Banshee Hot Rods stroker crank * Banshee Pro Design cool head * Cometic gasket kit Banshee * Banshee Titanium stud kit * Banshee engine rebuild kit * Yamaha Banshee performance parts * Banshee 22cc billet domes * 4mm stroker Banshee * BPRATV Banshee kit --- **Meta Title:** Banshee 421cc Athena Big Bore Stroker Kit – CP-Carrillo Pistons, +4mm Crank --- **Meta Description:** Rebuild your Banshee with the 421cc Stroker Kit! Includes Athena 68mm cylinders, CP-Carrillo forged pistons, Hot Rods +4mm crank, Pro Design cool head \u0026amp; Ti studs. Bolt-on kit, 95+ HP potential. Porting recommended. 1-year warranty. \u003c\/span\u003e\u003c\/p\u003e","brand":"BPRATV","offers":[{"title":"Default Title","offer_id":45017182208197,"sku":"257066568359\/BANATH\/M16800\/4111\/PD300A\/JT","price":1848.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/banshee-athena-cp-carrillo-pistons-68mm-big-bore-421cc-stroker-crank-domes-cub_ff3e08e6-f9e7-46df-b1bd-ac57007b168a.png?v=1755466130","url":"https:\/\/bpratv.com\/products\/banshee-athena-cp-carrillo-pistons-68mm-big-bore-421cc-stroker-crank-domes-cub","provider":"BPRATV","version":"1.0","type":"link"}