MSD 4253 Enhancer Ignition For Sale

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The Enhancer produces a powerful spark with increased spark duration.. If you own a Yamaha with a 650 or 701 engine, this Enhancer is a necessity! The Enhancer produces a powerful spark with increased spark duration. Not only does the improved spark energy boost power, but this Enhancer features a more aggressive timing curve for even more power to get you going! At lower rpm you'll notice incredible acceleration and throttle response due to advancing the timing. Then as the rpm increases, the timing is retarded to the factory setting to prevent detonation and engine damage. For racers, there is also a lower rpm limit that you can activate for quick and consistent holeshots. By activating a switch mounted on the handlebar the rpm will limit at approximately 3,000 rpm. The instant the button is released, the rpm revs up just as normal and you rocket off. Everything you need to install the Yamaha Enhancer is supplied along with factory connectors for a direct plug-in installation!

• Factory style connectors for a direct plug-in installation.
• Bolt in place of the factory ignition.
• High output sparks improve throttle response, starting and top end power.

General Policies

Warranty & Return Policy

• Holley Performance Products warrants new products to be free from defects in material and workmanship for a period of 90 days from date of purchase. Many items may have longer warranties please see Item Specifics above or contact us for information.
• Holley Performance Products Limited Warranty specifically does not apply to items or products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water,corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog.
• Warranties do not apply to items sold as Used. We want to make sure that every customer is completely satisfied with their purchase. Although obsolete, scratch & dent and used items do not have a warranty, we understand that things happen and every situation is different. Please let us know of any issues you may have before leaving response so we have an opportunity to make things right. We will do everything possible to make sure you are fully satisfied with your purchase and we want to earn your continued business!
• Buyer pays return shipping

Shipping & Tracking

• Please see the “Shipping and Payment” tab
• We ship all US orders via United Parcel Service (UPS Ground)
• A signature is required on all UPS orders over $750
• Tracking information will be sent via email after your package ships (you must supply a valid email address during checkout)
• We ship within 1 business day upon receipt of payment
• We do not ship to APO/FPO or US Post Office Box addresses
• We can not ship as a "GIFT" or ship anything internationally with changes to the invoice

Customer Service & response

• Our customer service hours are 7:00 am – 4:00 pm Central Time Monday thru Friday (excluding holidays)
• If you are not certain about an item or have questions, use the “Ask Seller a Question” link under the listing. We strive to answer questions submitted thru ’s message system within 1 business day
• If you have a technical question about your purchase, please call our TechServices department at [phone removed by ] between 8:00 am – 6:00 pm M-F and Saturdays 9:00 am to 3:00 pm.
• We want you to be completely satisfied with your purchase – please let us know if you have any problems with your purchasebefore leaving responseso we have a chance to make it right – we want your repeat business!

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