EDR Performance RS660 Velocity Stack kit Gen 1 2020-2025 and Gen 2 2026+ The EDR Performance RS660/Tuono 660 Velocity stacks are the PROVEN best for your Aprilia, we spent hours on the dyno comparing the competitions and ours and didn't settle until we beat them all! Dyno proven gains of 5-8 rwhp is no joke on these bikes! (Tuono owners with our ecu can see over 15rwhp!) Developed 100% in house on simulation software, then again, 100% produced in house on 1 of our 2 state of the art Mark Forged 3D machines, then put on bikes in our state of the art INC Dyno cell room to test and confirm, then finally backed up on the race track with real world data! NO other velocity stack is made 100% IN HOUSE from the initial design to prototyping to dyno testing to production, ours are 100% made here, at EDR Performance! Our stacks are ran in numerous club racing organizations around the world as well as many top MotoAmerica teams (we cant say who due to their sponsor contracts) Our 660 stacks greatly improve torque/HP to smooth power delivery. The stock stacks cause the bikes power to greatly fall off around 9,500 rpm however our 660 stacks will keep your great stock like power band and torque but allow it to breathe all the way past 11,500 rpm! EDR Performance velocity stacks provide a smooth power while allowing the bike to continue making power all the way to redline. This allows the rider a true feel for the throttle giving a more accurate throttle inputs, improves confidence to get on the throttle sooner and boosts rider confidence.*stacks are not available in colors, only black due to the proprietary Onyx + Carbon Fiber filament. This material is very high end, with a 145*c+ temperature stability rating and is unaffected by race fuel, they will most likely out live your motorcycle! These kits do not contain instructions, however you simply remove your oem stacks and bolt our 660 stacks in, very simple! These are intended for racing and off road use only. Current photo is from prototype testing & may not reflect final product PLEASE NOTE YOUR YEAR! There are 2 Generations for this motorcycle 2020-2025 and 2026+ Please be sure to select your correct model If you are not sure exactly please contact us Kit includes: 1 x "Tall" Velocity stack (gen 1 Left, gen 2 on Right) 1 x "Short" Velocity stack (gen 1 Right, gen 2 on Left) 1 x loc-tit package PLEASE NOTE: As of Summer 2025 due to extremely high demand your velocity stack order may take 2-3 weeks lead time. We fulfill all orders in the order received. These are custom made for you and as such do take some time. These products are intended for closed course off road competition use only. Use of this product for any other purpose is strictly prohibited. The buyer assumes all responsibility to local laws, regulations and use. All 3D products by EDR Performance, INC are made to order therefore non cancelable, refundable or returnable. We always will warranty any item needing 1 year from the date of purchase. Racing parts are never legal for sale or use in California or any pollution controlled vehicle. These products are 100% made to order, as such there is no cancellation, returns or refunds. If you need to make changes please contact us directly via email with your order number at [email protected]. No exceptions unless EDR Performance Inc gives written confirmation
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