The best 4/6 lowering kit combines a true drop along with reliable components that preserve ride quality and alignment. This guide highlights five top options suitable for American trucks and SUVs, with clear notes on who each kit is best for and why. Ideal buyers include DIY enthusiasts seeking bolt-on installs, frequent highway drivers who want stable handling, and those pursuing a lower stance without sacrificing durability.
Quick comparison of selected products:
| Product | Brand | Best For | Key Benefit |
|---|---|---|---|
| 2007-2016 GM 1500 4/6 Kit | IHC Suspension | GM 1500 owners needing control arm replacement | Factory-spec control arms with camber correction |
| McGaughys 34070 | McGaughy’s Suspension | Durable, adjustable 3/5 or 4/6 for GM trucks | Drop spindles and performance shocks included |
| McGaughys 34170 | McGaughy’s Suspension | Chevy Silverado/Sierra 1500 2014+ | Cast steel control arms, comprehensive kit |
| Rough Country 72330 | Rough Country | GM pickups 2007–2015 | Level drop with maintained ride quality |
| WnP 4/6 Drop Kit | WnP | 2007–2013 Silverado/Sierra 1500 2WD | Direct bolt-on with complete parts |
| maXpeedingrods 2”/4” Kit | maXpeedingrods | 1988–1998 GM trucks | Durable carbon steel with enhanced bushings |
2007-2016 GM 1500 4/6 Lowering Kit from IHC Suspension
Best for GM 1500 owners who want a managed drop plus a refreshed front end. This kit combines lowering with replacement control arms that meet factory specs, reducing the need for extra camber or caster components. It targets long-term reliability by upgrading ball joints and bushings while preserving alignment accuracy. The kit’s design favors buyers who want a unified solution rather than sourcing meandering parts from multiple brands.
Who it’s best for: DIY installers seeking a one-stop solution and GM 1500 drivers who want improved front-end geometry without added part friction. Caution: the product emphasizes factory-spec alignment rather than aggressive camber correction, so extreme alignment needs may require additional tuning.
RTZ 5″ Front / 7″ Rear Lowering Kit for Silverado/Sierra
This kit is designed for Chevy Silverado and GMC Sierra 1500 pickups from 88–98 with a mixed front/rear lowering approach. It’s best for enthusiasts targeting a pronounced stance with a rear-levered drop while offering a robust build that includes Doestch Tech shocks. It is particularly well-suited for classic body styles where a mid to deep drop is desired and road handling remains a priority.
Who it’s best for: older model GM pickup owners seeking a comprehensive, heavy-duty setup with a clear front and rear drop. Caution: required frame notching for clearance can add install complexity and time.
McGaughy’s 34070 3/5 or 4/6 Adjustable Kit for GM 1500
Best for GM 1500 owners who want a flexible choice between a 3/5 or 4/6 drop. The kit includes drop spindles, front adjustable shocks, a rear flip kit, and rear hangers for reliable geometry across drives. Cast-metal components and durable hardware ensure long-term performance. It’s especially suitable for users who value adjustability and a strong aftermarket presence.
Who it’s best for: drivers who want a customizable stance with reinforced front-end components. Caution: the kit relies on precise alignment during installation; misalignment risks are higher if not installed with care.
McGaughys 34170 3/5 or 4/6 for 2014 GM 1500
Best for later-model Silverado/Sierra 1500 owners seeking robust, all-cab lowering with strong control arms. This kit emphasizes MUST HAVE cast steel control arms and comprehensive components like drop spindles, adjustable front struts, a rear axle flip kit, and shock extenders. It’s well-suited for drivers prioritizing overall durability and install reliability across cab configurations.
Who it’s best for: owners of 2014–up GM trucks wanting a durable, all-in-one lowering solution. Caution: the kit’s full benefit relies on careful alignment and proper hardware torque during install.
2009–2018 RAM 1500 2WD 4/6 Lowering Kit
Best for RAM 1500 2WD owners needing an adjustable upper control arm setup for camber correction. The kit includes IHC-style control arms with Delrin bushings to maximize performance and minimize maintenance, plus relocation brackets to preserve OEM rear geometry. It is designed to reduce sway and wobble at higher speeds. This option is ideal for RAM trucks prioritizing stability and low-to-mid range drop consistency.
Who it’s best for: RAM 1500 drivers seeking precise camber control with durable bushings. Caution: the installation may require specialized alignment steps due to relocation components.
Rough Country 72330 2″ Front / 4″ Rear Kit
Best for GM trucks requiring a level stance with preserved ride quality. The kit drops the front 2″ and the rear 4″ and includes N3 Performance Rear Shocks to maintain a smoother ride. It also comes with Grade 9 hardware and hardened washers for improved durability. It’s a straightforward bolt-on option that suits owners who want a cost-effective, balanced drop.
Who it’s best for: daily drivers seeking a balanced, level look without sacrificing ride integrity. Caution: a deeper rear drop can affect load handling on heavy payloads.
4/6 Drop Kit for 2007–13 Silverado/Sierra 1500 2WD
Best for 2007–2013 Silverado/Sierra 1500 2WD owners seeking a complete drop kit with direct bolt-on parts. Features include 2″ front drop spindles, 2″ coil springs, and 6″ rear flip kit for a true 4/6 stance. It’s well-suited for DIY installers who want a simple, no-weld setup and a wide install window.
Who it’s best for: GM mid-model owners who want an uncomplicated, bolt-on option. Caution: rear flip kits rely on proper U-bolt alignment; misalignment can impact rear axle positioning.
Buying Guide: Key Considerations For 4/6 Lowering Kits
- Vehicle compatibility: Confirm year, make, and model. Some kits are model-specific, while others target broader GM platforms.
- Drop range and balance: A true 4/6 should lower the front approximately 4 inches and the rear about 6 inches, but actual results vary with cab configuration and suspension design.
- Components included: Look for drop spindles, control arms, shocks, and rear flip kits. Some kits replace aging bushings and joints, improving longevity.
- Installation complexity: Bolt-on kits save time, but some require notching or frame clearance work. Consider your DIY skill level.
- Ride quality vs. stance: Some kits emphasize ride preservation; others prioritize aggressive aesthetics. Read component specs to gauge comfort vs. drop.
- Camber and alignment: Kits with adjustable control arms or factory-spec arms simplify alignment. Plan for roadside or shop alignment after install.
- Durability and materials: Cast steel arms and stainless hardware offer longer life. Powder-coated parts resist corrosion in harsh climates.
- Brand and support: Established brands with clear installation guides help reduce installation risks and provide future support.
FAQ
- What is a 4/6 lowering kit?
Answer: It refers to a suspension upgrade that lowers the front about 4 inches and the rear about 6 inches for a level or slightly raked stance. - Do these kits require welding?
Answer: Most bolt-on kits do not require welding, but some high-clearance or relocation steps may need frame notching or precise alignment. - Will a 4/6 kit affect my factory alignment?
Answer: Yes. Many kits include adjustable arms or camber-correcting features to preserve alignment, but an after-install alignment is usually recommended. - Which kit is best for GM trucks?
Answer: Options like IHC Suspension GM 1500 kit and McGaughys 34070/34170 are designed specifically for GM 1500 trucks, offering components aimed at GM geometry and durability. - Is a deeper rear drop better?
Answer: A deeper rear drop creates a level or slightly raked appearance, but it can impact load handling and ride height; balance with front height for desired stance.