Summit

LS Series Cast Steel Rocker Arms 1.7 Ratio

$326.99

SKU: SUM-141556

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Summit Racing Pro LS Upgraded Rocker Arms (SUM-141556) are engineered to enhance the performance and durability of GM LS series engines. Constructed from high-grade cast steel, these rocker arms offer a 1.7 ratio and a straight body design, making them a robust upgrade over factory components. These rocker arms are specifically designed to fit LS1 cathedral port heads. Their upgraded trunnion design replaces the factory bearing and powdered metal components, offering improved longevity and reliability, especially when used with higher rate springs and performance camshafts. The set includes all necessary hardware for installation. The direct-fit design ensures compatibility with a range of LS engines, including LS1, LS2, LS6, LQ4, and LQ9 variants. This upgrade is ideal for enthusiasts looking to maximize their engine's potential and ensure consistent valvetrain stability under demanding conditions.

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

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Specifications

BrandSummit
Part NumberSUM-141556
CategoryEngines and Components

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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.

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