Traxxas Progressive-2 Rocker Arm Set with Plastic Bushings 1/16 TRX7158

Overview

The Traxxas Progressive-2 Rocker Arm Set is an essential suspension upgrade for RC enthusiasts looking to fine-tune their 1/16 scale vehicles. Whether you're a seasoned RC car UK competitor or a weekend basher, understanding suspension geometry is key to unlocking your model's full potential. This genuine Traxxas component offers progressive-rate suspension tuning that transforms how your ready to run RC model handles jumps, landings and technical terrain. The progressive rocker arm concept is fundamental to modern RC suspension design, allowing drivers to customise how their vehicle responds as the suspension compresses during aggressive driving.

Progressive rate rocker arms are intelligent suspension components that dynamically adjust the compressive force at the wheel as the suspension travels through its range of motion. Rather than providing constant resistance, progressive-2 rocker arms increase stiffness as the suspension compresses, preventing the common issue of bottoming out when landing from jumps or hitting rough terrain. This engineering approach means your RC model maintains control and stability during high-impact moments whilst remaining compliant during normal driving. For UK RC enthusiasts running 1/16 scale vehicles, this upgrade represents a straightforward way to achieve professional-level suspension tuning without requiring extensive mechanical knowledge.

Traxxas Progressive-2 Rocker Arms come as standard equipment on 1/16 E-Revo, 1/16 E-Revo VXL, and 1/16 Slash models, demonstrating their effectiveness across multiple vehicle platforms. When added to a 1/16 Summit, these rocker arms lower the ride height whilst stiffening the overall suspension character, opening up new setup possibilities. The set includes eight pieces of plastic bushings, providing everything needed for a complete rocker arm installation or replacement on your RC model.

Key Features

• Progressive-2 Rate Design — The progressive-2 rocker arm geometry increases suspension stiffness as compression increases, which effectively reduces bottoming out when landing from jumps and absorbs landing impact more effectively than traditional fixed-rate arms.
• Eight-Piece Bushing Set — This comprehensive set includes all the plastic bushings required for a complete rocker arm installation or upgrade, ensuring you have everything needed for proper assembly and operation.
• Standard Equipment on Premium Models — Traxxas includes these progressive-2 rocker arms as standard on flagship 1/16 scale models including E-Revo, E-Revo VXL, and Slash, proving their effectiveness and reliability across multiple vehicle platforms.
• Ride Height Adjustment Capability — Installing progressive-2 rocker arms on compatible models such as the 1/16 Summit lowers the overall ride height, which improves ground clearance management and allows for more aggressive driving characteristics.
• Enhanced Suspension Stiffness — The progressive nature of these rocker arms means suspension stiffness increases with travel, preventing harsh bottoming-out whilst maintaining suppleness during normal driving conditions.
• Compatible with Multiple Platforms — Whether you're upgrading a 1/16 Summit or replacing components on your E-Revo or Slash, these rocker arms offer flexible fitment across Traxxas' 1/16 scale lineup.

Technical Performance

The Traxxas Progressive-2 Rocker Arm Set represents carefully engineered suspension geometry developed through extensive racing and bashing experience. The progressive-2 design fundamentally changes how suspension force builds as the vehicle compresses, creating a non-linear response curve that benefits both high-speed track driving and rough terrain bashing. The plastic bushings included in this eight-piece set are precision-moulded to ensure consistent fit and smooth operation within the rocker arm assembly. This engineering approach delivers measurable improvements in suspension performance by allowing the suspension to work progressively rather than with fixed resistance, meaning initial suspension travel remains relatively soft for compliance, but as compression increases, the resistance builds significantly to prevent bottoming. For RC enthusiasts in the UK running 1/16 scale vehicles, this represents a substantial performance upgrade that costs considerably less than replacing entire suspension systems. The integration of these rocker arms on Traxxas' premium E-Revo and Slash models demonstrates manufacturer confidence in their effectiveness, and retrofitting them to other compatible vehicles like the Summit unlocks suspension characteristics otherwise unavailable in those platforms.

What's in the Box

• Progressive-2 Rocker Arm Set
• Eight plastic bushings for rocker arm assembly

Frequently Asked Questions

• What is a progressive-2 rocker arm and how does it improve suspension performance? — A progressive-2 rocker arm is a suspension component that increases stiffness as the suspension compresses, rather than providing constant resistance. This design reduces the likelihood of bottoming out when landing from jumps whilst maintaining compliance during normal driving, making it ideal for bashers and racers who push their vehicles hard.
• Which vehicles are compatible with the Traxxas Progressive-2 Rocker Arm Set TRX7158? — These rocker arms come standard on 1/16 E-Revo, 1/16 E-Revo VXL, and 1/16 Slash models. They can also be installed on the 1/16 Summit, where they lower ride height and stiffen the suspension character for more aggressive performance.
• Will installing progressive-2 rocker arms change how my RC car handles? — Yes, adding progressive-2 rocker arms to compatible vehicles like the Summit will noticeably change handling characteristics by lowering ride height and increasing suspension stiffness, particularly during compression. This results in improved landing control after jumps and more planted cornering.
• Do I need any other parts to install these rocker arms? — This set includes eight plastic bushings, which are the primary wear components needed for a complete rocker arm installation. You should verify compatibility with your specific vehicle before purchasing, as these are designed for 1/16 scale Traxxas models.
• Is this a genuine Traxxas part? — Yes, the TRX7158 is an official Traxxas component part number, ensuring genuine quality and compatibility with your Traxxas RC model. When purchased from an authorised Traxxas retailer, you receive authentic components with manufacturer backing.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Rocker arm Set, progressive-2 / plastic bushings (8 pcs) TRX7158 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.