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Air and Fuel› Fuel Injection Systems and Components - Electronic

SiriMoto

S300 / K-Pro E85 Flex Fuel Kit

$340.00 $299.00 Save $41.00

SKU: SIRIMOTO-S300-KPRO-E85-FLEX-FUEL-KIT

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The SiriMoto S300 / K-Pro E85 Flex Fuel Kit is a sophisticated upgrade designed to unlock the performance potential of E85 fuel for compatible Honda and Acura vehicles. This kit enables you to run E85 fuel, or any blend of E85 and gasoline, seamlessly. It features constant ethanol content monitoring, passing real-time data to your S300 or K-Pro ECU, allowing for optimal engine performance across different fuel mixtures. The kit includes premium harnesses to ensure a reliable connection. The primary benefit of this system is the significant increases in horsepower and torque that can be achieved when running E85, especially when paired with appropriate tuning. While the kit offers a plug-and-play installation, custom tuning is highly recommended to fully capitalize on the benefits of E85 and ensure engine longevity. Hard driving or aggressive tuning without proper calibration may require further adjustments. The system is suitable for Honda and Acura vehicles equipped with an OEM return style fuel system and is compatible with SiriMoto or Hondata S300 / K-Pro ECUs.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSiriMoto
Part NumberSIRIMOTO-S300-KPRO-E85-FLEX-FUEL-KIT
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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