The Latest High-Performance Components for 2025

From modular battery systems to advanced thermal management and heavy-duty contactors, today’s EV conversions require parts that balance reliability, performance, and ease of integration. This lineup showcases some of the latest solutions available to builders, whether you’re putting together a street-ready Hyper 9 conversion, designing a marine propulsion system, or engineering a high-voltage platform that pushes the limits of power. Each product featured here has been selected for its proven performance and practical fit in real-world builds, giving you confidence that your system will deliver both safety and performance on the road.

HALOBLK Alloy Pedal 2

Pedal covers don’t usually grab headlines—but HALOBLK’s latest release might just change that. The Alloy Pedal 2 is billed as the world’s first quick-release pedal cover, and it’s a clever rethink of an accessory that hasn’t seen much innovation in decades. Instead of fiddling with tools or flimsy clips, the Alloy Pedal 2 snaps on or off in about three seconds. Simple. Secure. Done.

Crafted from aerospace-grade aluminum, each pedal is both lightweight and tough enough for serious daily use. A one-piece injection-molded design ensures a snug, rattle-free fit, while the expanded anti-slip rubber surface means your foot stays planted when it matters. Ergonomic shaping improves pedal feel, and the laser-cut detailing gives a premium finish you’ll actually notice when you look down.

Style-wise, HALOBLK leans into personality with three distinct flavors: Toy Switch, with its playful, tech-heavy vibe; Arcadekid, a nod to bold, retro arcade design; and Nothing, a stripped-back minimalist option for purists that will perfectly match your Tesla’s interior styling.

More info: haloblk.com / legacyEV.com

 Fellten Universal 21 kWh Battery Pack

The FL10 UBP21CCS is a compact, high-density battery pack designed to fit under the hood or deck of a wide range of vehicles, including classic muscle cars, Euro sports cars, 4x4s, trucks, and even boats. With 21 kWh of capacity and a nominal voltage of 393 volts, it provides sustained energy for today’s most popular drive units, such as Zonic, Tesla, Cascadia Motion, RAD Propulsion, and marine outboards.

Built with steel and aluminum enclosures, the pack weighs just 130 kilograms and incorporates advanced liquid cooling through aluminum cold plates with automotive-grade quick connections. It is fully compliant with EU R100.1 and AU VSB14 safety standards and comes equipped with integrated contactor control, pre-charge, battery management, and protective systems for seamless integration into conversion projects.

The UBP21CCS delivers up to 160 kilometers of range on a charge, recharges in less than three and a half hours via 6.6 kW AC charging, and supports CCS fast charging at up to 21 kW. It offers continuous discharge capability of 35 to 40 kW with liquid cooling, peak output of 80 kW, and includes dual 25 amp auxiliary high-voltage outputs to support HVAC and other accessories. Its universal form factor and self-contained safety systems make it a powerful plug-and-play solution for builders seeking a ready-to-install energy system.

More info: fellten.com / legacyev.com

5kW & 7kW Electric Water Heater with CAN Control

This compact high-voltage water heater delivers efficient thermal management for both battery conditioning and cabin heating. Operating up to 600 volts, the unit provides 7 kilowatts of heating power in a lightweight and easy-to-mount package. CAN bus communication allows for precise control of temperature and power levels, making it well suited for integration with modern EV systems.

The heater is built to automotive standards with durable construction, over-temperature protection, and integrated safety features. Its design supports closed-loop coolant systems and is compatible with the same glycol-water mixes used throughout EV platforms. Whether used to maintain battery pack performance in cold climates or to supply consistent cabin heat, this unit provides reliable, high-density thermal output for conversion projects.

More info: legacyev.com

Rincon Power RXR1K High Voltage Contactor

The RXR1K from Rincon Power is built for the most demanding EV applications, where only the highest-performing components will do. Rated for 1,200 amps of continuous current and system voltages up to 1,500 volts, this hermetically sealed contactor is engineered to handle extreme loads with precision and reliability. Its ceramic-sealed, gas-filled construction ensures superior carry and switching performance while protecting against environmental challenges.

With bi-directional main contacts and mechanically linked SPDT auxiliary contacts for accurate feedback, the RXR1K provides the confidence and durability required in high-power builds. It is capable of withstanding overloads of 2,000 amps for 90 seconds and short-circuit events of 10,000 amps for two milliseconds, making it one of the most robust switching solutions available for EV systems.

Designed for performance, durability, and safety, the RXR1K is the contactor of choice for builders pushing the limits of power density and reliability. This unit is best reserved for the highest-performing builds, where every component must stand up to the most extreme demands.

More info: legacyev.com

APP EV Systems 10-Module Battery Pack

APP has expanded its modular battery lineup with a new 10-module enclosure, designed to meet the needs of even more EV projects. Built from the same carbon-Kevlar-fiberglass construction as the 8-module pack, this larger enclosure still delivers an 80% weight savings compared to steel boxes while weighing only 290 lbs fully loaded. Flexible mounting configurations allow the pack to be positioned throughout the vehicle to balance weight and improve performance.

Like the rest of the APP system, the 10-module pack features active liquid cooling with automotive-grade quick-release connectors (straight or 90°), along with key safety features including a fused manual service disconnect, HVIL (high-voltage interlock), touch-proof HV connectors, and venting units for degas flow.

This configuration provides 23 kWh of energy, a max voltage of 128 V, and an operating range of 84–128 V. An external 61-pin BMS connector makes integration straightforward with the builder’s preferred BMS system.

Builders can also combine 8- and 10-module packs in series to reach their ideal voltage for higher-voltage EV systems. This makes the new 10-module pack not just a perfect drop-in solution for Hyper 9 kits but also a versatile building block for custom conversions.

More info: https://appevsystems.com/ / legacyev.com