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    • MSD Three Step Module Selector, 3-Stage RPM/Retard Control | 8737
    • MSD Three Step Module Selector, 3-Stage RPM/Retard Control | 8737
    • MSD Three Step Module Selector, 3-Stage RPM/Retard Control | 8737
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    • Three Step Module Selector The MSD Module Selectors Allow You To Choose Two Or Three Different Rpm Limits That Can Be Activated At Different Times MSD Ignition
    • Three Step Module Selector The MSD Module Selectors Allow You To Choose Two Or Three Different Rpm Limits That Can Be Activated At Different Times MSD Ignition
    • Three Step Module Selector The MSD Module Selectors Allow You To Choose Two Or Three Different Rpm Limits That Can Be Activated At Different Times MSD Ignition
    • Three Step Module Selector The MSD Module Selectors Allow You To Choose Two Or Three Different Rpm Limits That Can Be Activated At Different Times MSD Ignition
    • Three Step Module Selector The MSD Module Selectors Allow You To Choose Two Or Three Different Rpm Limits That Can Be Activated At Different Times MSD Ignition
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    Sale!

    MSD Three Step Module Selector, 3-Stage RPM/Retard Control | 8737

    Vendor: MSD
    Part Number: 8737
    Save $25
    Sale Price $199.95 Regular Price $224.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    This module selector allows up to three different rpm or retard limits to be activated at different times during a pass. One wire can be tied to the line-lock circuit to hold a burnout rpm limit, a second to the clutch or trans switch for a consistent launch rpm, and the remaining high limit protects the engine if no modules are selected. It also works with MSD Timing Controls for staged retard amounts, useful with multi-stage nitrous systems.

    Specifications:

    • Category: Air and Fuel Delivery
    • Part Type: Engine RPM Limiter
    • Product Type: Module Selector
    • Sub Category: Fuel Injection System and Related Components
    • Selects between launch, burnout, and top-end rpm limits
    • Compatible with MSD Soft Touch Rev Control or MSD Timing Controllers using high-speed retard modules
    • RPM or retard modules sold separately, not included
    • Part Number: 8737

    FAQ

    How many rpm limits can the 8737 selector manage?

    It allows up to three different rpm or retard limits to be activated at different times.

    What is it compatible with?

    It must be used with an MSD Soft Touch Rev Control or an MSD Timing Controller with a high-speed retard module.

    Are the modules included?

    No, rpm and retard modules are not supplied and must be purchased separately.

    Can it be used with a nitrous system?

    Yes, when connected to an MSD Timing Control it can activate different retard amounts at select times, useful for multi-stage nitrous setups.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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