{"product_id":"velocity-stacks-by-grt-for-aprilia-rs-660-and-tuono-660-e5-2025-eu-2026-us","title":"Velocity Stacks by GRT for Aprilia RS 660 and Tuono 660 E5+ (2025+ EU – 2026+ US)","description":"\u003ch2 data-start=\"226\" data-end=\"305\"\u003eGRT Velocity Stacks for Aprilia RS 660 \u0026amp; Tuono 660 E5+ (2025+ EU \/ 2026+ US)\u003c\/h2\u003e\n\u003ch3 data-start=\"307\" data-end=\"330\"\u003eProduct Description\u003c\/h3\u003e\n\u003cp data-start=\"331\" data-end=\"534\"\u003eUnlock the full performance potential of your \u003cstrong data-start=\"377\" data-end=\"412\"\u003eAprilia RS 660 or Tuono 660 E5+\u003c\/strong\u003e with the \u003cstrong data-start=\"422\" data-end=\"449\"\u003eGRT Velocity Stacks Kit\u003c\/strong\u003e, engineered to improve engine efficiency and deliver a stronger, more exciting ride.\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"838\"\u003eDeveloped through extensive testing and multiple prototype iterations, these velocity stacks are optimized in \u003cstrong data-start=\"646\" data-end=\"666\"\u003elength and taper\u003c\/strong\u003e to maximize airflow efficiency. The result is \u003cstrong data-start=\"713\" data-end=\"766\"\u003eincreased torque and power in the upper RPM range\u003c\/strong\u003e, delivering stronger acceleration from \u003cstrong data-start=\"806\" data-end=\"837\"\u003e8,000 rpm up to the limiter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"840\" data-end=\"969\"\u003eManufactured using \u003cstrong data-start=\"859\" data-end=\"902\"\u003ehigh-quality PA12 nylon via 3D printing\u003c\/strong\u003e, the kit ensures excellent durability, precision, and performance.\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1132\"\u003eBeyond performance gains, the kit also enhances the \u003cstrong data-start=\"1023\" data-end=\"1039\"\u003eintake sound\u003c\/strong\u003e, producing a deeper and more aggressive tone that adds a true racing character to your bike.\u003c\/p\u003e\n\u003cp data-start=\"1134\" data-end=\"1250\"\u003e\u003cstrong data-start=\"1134\" data-end=\"1148\"\u003eImportant:\u003c\/strong\u003e\u003cbr data-start=\"1148\" data-end=\"1151\"\u003eThis kit is \u003cstrong data-start=\"1163\" data-end=\"1249\"\u003eonly compatible with Aprilia RS 660 and Tuono 660 E5+ models (2025+ EU \/ 2026+ US)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1252\" data-end=\"1435\"\u003eIf you own a \u003cstrong data-start=\"1265\" data-end=\"1303\"\u003e2021–2024 EU or 2021–2025 US model\u003c\/strong\u003e, please use the dedicated kit here:\u003cbr data-start=\"1339\" data-end=\"1342\"\u003e\u003ca href=\"https:\/\/www.mbspecialparts.co.uk\/products\/velocity-stacks-rs660-tuono-660?_pos=6\u0026amp;_sid=89d325fb9\u0026amp;_ss=r\"\u003eVelocity stacks 660 for RS and Tuono 660 by GRT\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003chr data-start=\"1437\" data-end=\"1440\"\u003e\n\u003ch2 data-start=\"1442\" data-end=\"1457\"\u003eKey Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1458\" data-end=\"1801\"\u003e\n\u003cli data-start=\"1458\" data-end=\"1529\"\u003e\n\u003cp data-start=\"1460\" data-end=\"1529\"\u003eIncreased \u003cstrong data-start=\"1470\" data-end=\"1529\"\u003etorque and horsepower from 8,000 rpm to the rev limiter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1530\" data-end=\"1575\"\u003e\n\u003cp data-start=\"1532\" data-end=\"1575\"\u003e\u003cstrong data-start=\"1532\" data-end=\"1575\"\u003eDeeper and more pronounced intake sound\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1576\" data-end=\"1626\"\u003e\n\u003cp data-start=\"1578\" data-end=\"1626\"\u003ePrecision \u003cstrong data-start=\"1588\" data-end=\"1626\"\u003ePA12 nylon 3D-printed construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1627\" data-end=\"1677\"\u003e\n\u003cp data-start=\"1629\" data-end=\"1677\"\u003e\u003cstrong data-start=\"1629\" data-end=\"1650\"\u003eEasy installation\u003c\/strong\u003e with included instructions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1678\" data-end=\"1801\"\u003e\n\u003cp data-start=\"1680\" data-end=\"1801\"\u003e\u003cstrong data-start=\"1680\" data-end=\"1700\"\u003eFREE €168 coupon\u003c\/strong\u003e to download a custom ECU map from the UpMap Store (compatible with stock and racing exhaust systems)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1803\" data-end=\"1806\"\u003e\n\u003ch2 data-start=\"1808\" data-end=\"1835\"\u003eWho Is This Product For?\u003c\/h2\u003e\n\u003cp data-start=\"1836\" data-end=\"1978\"\u003eThis kit is designed for \u003cstrong data-start=\"1861\" data-end=\"1904\"\u003eAprilia RS 660 and Tuono 660 E5+ owners\u003c\/strong\u003e who want to maximize their bike’s performance on \u003cstrong data-start=\"1954\" data-end=\"1977\"\u003eboth road and track\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1980\" data-end=\"2024\"\u003eIt is especially recommended for riders who:\u003c\/p\u003e\n\u003cul data-start=\"2025\" data-end=\"2178\"\u003e\n\u003cli data-start=\"2025\" data-end=\"2066\"\u003e\n\u003cp data-start=\"2027\" data-end=\"2066\"\u003eWant stronger high-RPM power delivery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2067\" data-end=\"2107\"\u003e\n\u003cp data-start=\"2069\" data-end=\"2107\"\u003eEnjoy a more aggressive intake sound\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2108\" data-end=\"2178\"\u003e\n\u003cp data-start=\"2110\" data-end=\"2178\"\u003eAre looking to \u003cstrong data-start=\"2125\" data-end=\"2161\"\u003eunlock the full tuning potential\u003c\/strong\u003e of their Aprilia\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2180\" data-end=\"2183\"\u003e\n\u003ch2 data-start=\"2185\" data-end=\"2212\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul data-start=\"2213\" data-end=\"2441\"\u003e\n\u003cli data-start=\"2213\" data-end=\"2252\"\u003e\n\u003cp data-start=\"2215\" data-end=\"2252\"\u003e\u003cstrong data-start=\"2215\" data-end=\"2228\"\u003eMaterial:\u003c\/strong\u003e PA12 nylon (3D printed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2253\" data-end=\"2353\"\u003e\n\u003cp data-start=\"2255\" data-end=\"2353\"\u003e\u003cstrong data-start=\"2255\" data-end=\"2285\"\u003eCompatible exhaust brands:\u003c\/strong\u003e Akrapovic, SC Project, Arrow, Austin Racing, Dominator, Mivv, Spark\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2354\" data-end=\"2441\"\u003e\n\u003cp data-start=\"2356\" data-end=\"2441\"\u003e\u003cstrong data-start=\"2356\" data-end=\"2371\"\u003eECU tuning:\u003c\/strong\u003e Custom maps available via \u003cstrong data-start=\"2398\" data-end=\"2413\"\u003eUpMap Store\u003c\/strong\u003e (included free with coupon) \u003ca href=\"https:\/\/www.mbspecialparts.co.uk\/products\/upmap-aprilia-t800-for-rs-660-e5-plus-2025-usa-version-2026?_pos=11\u0026amp;_sid=43fc2e0ba\u0026amp;_ss=r\"\u003eT800+ for Aprilia RS 660 E5 plus 2025 (USA version 2026)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2443\" data-end=\"2446\"\u003e\n\u003ch2 data-start=\"2448\" data-end=\"2477\"\u003eUpgrade Your Aprilia Today\u003c\/h2\u003e\n\u003cp data-start=\"2478\" data-end=\"2579\"\u003eTake your RS 660 or Tuono 660 E5+ to the \u003cstrong data-start=\"2519\" data-end=\"2545\"\u003enext performance level\u003c\/strong\u003e with the GRT Velocity Stacks Kit.\u003c\/p\u003e\n\u003chr data-start=\"2581\" data-end=\"2584\"\u003e\n\u003ch2 data-start=\"2586\" data-end=\"2612\"\u003eRecommended Accessories\u003c\/h2\u003e\n\u003ch3 data-start=\"2614\" data-end=\"2657\"\u003eUpMap T800 (Required to Upload ECU Map)\u003c\/h3\u003e\n\u003cp data-start=\"2658\" data-end=\"2859\"\u003eTo install the included ECU map, you’ll need the \u003cstrong data-start=\"2707\" data-end=\"2723\"\u003eUpMap device \u003c\/strong\u003eavailable here: \u003ca href=\"https:\/\/www.mbspecialparts.co.uk\/products\/upmap-aprilia-t800-for-rs-660-e5-plus-2025-usa-version-2026?_pos=11\u0026amp;_sid=43fc2e0ba\u0026amp;_ss=r\"\u003eT800+ for Aprilia RS 660 E5 plus 2025 (USA version 2026)\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2861\" data-end=\"2889\"\u003eSprint Filter Air Filter\u003c\/h3\u003e\n\u003cp data-start=\"2890\" data-end=\"3106\"\u003eThe RS 660 and Tuono 660 are among the few bikes that show \u003cstrong data-start=\"2949\" data-end=\"2995\"\u003esignificant gains from a racing air filter\u003c\/strong\u003e. We recommend the \u003cstrong data-start=\"3014\" data-end=\"3031\"\u003eSprint Filter\u003c\/strong\u003e for its durability, easy maintenance, and dry operation (no oil required). Availabel here:\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.mbspecialparts.co.uk\/products\/sprint-filter-pm176s-rs660-tuono-660?_pos=2\u0026amp;_sid=b83d2c79d\u0026amp;_ss=r\"\u003eSprint Filter 660 RS Tuono PM176S for Aprilia\u003c\/a\u003e\u003c\/p\u003e\n\u003chr data-start=\"3240\" data-end=\"3243\"\u003e\n\u003ch2 data-start=\"3245\" data-end=\"3261\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul data-start=\"3262\" data-end=\"3358\"\u003e\n\u003cli data-start=\"3262\" data-end=\"3308\"\u003e\n\u003cp data-start=\"3264\" data-end=\"3308\"\u003eAprilia \u003cstrong data-start=\"3272\" data-end=\"3308\"\u003eRS 660 E5+ (2025+ EU \/ 2026+ US)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3309\" data-end=\"3358\"\u003e\n\u003cp data-start=\"3311\" data-end=\"3358\"\u003eAprilia \u003cstrong data-start=\"3319\" data-end=\"3358\"\u003eTuono 660 E5+ (2025+ EU \/ 2026+ US)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3360\" data-end=\"3363\"\u003e\n\u003ch2 data-start=\"3365\" data-end=\"3384\"\u003eImportant Notice\u003c\/h2\u003e\n\u003cp data-start=\"3385\" data-end=\"3407\"\u003e\u003cstrong data-start=\"3385\" data-end=\"3407\"\u003eFor race use only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3409\" data-end=\"3584\"\u003eBoth the \u003cstrong data-start=\"3418\" data-end=\"3441\"\u003evelocity stacks kit\u003c\/strong\u003e and the associated \u003cstrong data-start=\"3461\" data-end=\"3486\"\u003eUpMap ECU calibration\u003c\/strong\u003e are intended exclusively for \u003cstrong data-start=\"3516\" data-end=\"3545\"\u003eclosed-circuit racing use\u003c\/strong\u003e, in accordance with local regulations.\u003c\/p\u003e\n\u003chr data-start=\"3586\" data-end=\"3589\"\u003e\n\u003ch1 data-start=\"3591\" data-end=\"3596\"\u003eFAQ\u003c\/h1\u003e\n\u003ch3 data-start=\"3598\" data-end=\"3645\"\u003eWhat performance improvements can I expect?\u003c\/h3\u003e\n\u003cp data-start=\"3646\" data-end=\"3847\"\u003eThe GRT velocity stacks are designed to improve \u003cstrong data-start=\"3694\" data-end=\"3737\"\u003etorque and power in the upper rev range\u003c\/strong\u003e, particularly from \u003cstrong data-start=\"3757\" data-end=\"3785\"\u003e8,000 rpm to the limiter\u003c\/strong\u003e, while also producing a \u003cstrong data-start=\"3810\" data-end=\"3846\"\u003edeeper and sportier intake sound\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-start=\"3849\" data-end=\"3878\"\u003eIs an ECU remap required?\u003c\/h3\u003e\n\u003cp data-start=\"3879\" data-end=\"4105\"\u003eWhile the stacks can be installed without it, an \u003cstrong data-start=\"3928\" data-end=\"3965\"\u003eECU remap is strongly recommended\u003c\/strong\u003e to fully exploit the performance gains.\u003cbr data-start=\"4005\" data-end=\"4008\"\u003eThe kit includes a \u003cstrong data-start=\"4027\" data-end=\"4047\"\u003eFREE €168 coupon\u003c\/strong\u003e to download a dedicated ECU map from the \u003cstrong data-start=\"4089\" data-end=\"4104\"\u003eUpMap Store\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-start=\"4107\" data-end=\"4169\"\u003eAre these compatible with older RS 660 \/ Tuono 660 models?\u003c\/h3\u003e\n\u003cp data-start=\"4170\" data-end=\"4339\"\u003eNo. This version fits \u003cstrong data-start=\"4192\" data-end=\"4233\"\u003eE5+ models only (2025+ EU \/ 2026+ US)\u003c\/strong\u003e.\u003cbr data-start=\"4234\" data-end=\"4237\"\u003eOwners of \u003cstrong data-start=\"4247\" data-end=\"4285\"\u003e2021–2024 EU or 2021–2025 US bikes\u003c\/strong\u003e must use the earlier version of the kit linked above.\u003c\/p\u003e\n\u003ch3 data-start=\"4341\" data-end=\"4393\"\u003eCan I use them with aftermarket exhaust systems?\u003c\/h3\u003e\n\u003cp data-start=\"4394\" data-end=\"4605\"\u003eYes. The stacks are compatible with popular aftermarket exhaust systems including \u003cstrong data-start=\"4476\" data-end=\"4551\"\u003eAkrapovic, SC Project, Arrow, Austin Racing, Dominator, Mivv, and Spark\u003c\/strong\u003e, especially when paired with the appropriate ECU map.\u003c\/p\u003e\n\u003ch3 data-start=\"4607\" data-end=\"4632\"\u003eAre these road legal?\u003c\/h3\u003e\n\u003cp data-start=\"4633\" data-end=\"4770\"\u003eNo. These components are \u003cstrong data-start=\"4658\" data-end=\"4690\"\u003eintended for racing use only\u003c\/strong\u003e and should be used on \u003cstrong data-start=\"4713\" data-end=\"4732\"\u003eclosed circuits\u003c\/strong\u003e in compliance with local regulations.\u003c\/p\u003e","brand":"www.mbspecialparts.co.uk","offers":[{"title":"Default Title","offer_id":57132538855806,"sku":null,"price":279.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/5699\/0449\/files\/VELOCITYSTACKSRSTUONO66025-261-4.webp?v=1773705095","url":"https:\/\/www.mbspecialparts.co.uk\/products\/velocity-stacks-by-grt-for-aprilia-rs-660-and-tuono-660-e5-2025-eu-2026-us","provider":"www.mbspecialparts.co.uk","version":"1.0","type":"link"}