Electric Bikes Tuning BLOG

As vertical bike racks gain popularity worldwide, many European riders are tempted to import cheaper options from markets like the USA and China. However, most of these racks are not compliant with EU road regulations, creating significant safety, legal, and insurance risks. Here’s what you need to know before considering...

If you're tired of struggling with horizontal bike racks, limited boot access, or awkward loading positions, it's time to consider the next evolution in bike transport — vertical bike racks. At EPA (Ebikes Parts and Accessories), we design and engineer EU-approved vertical bike racks that transform how you carry bikes...

BOSCH GEN5 SMART SYSTEM TUNING (2024–2025) The Bosch Gen5 Smart System, introduced in late 2024 and released in early 2025, represents the latest evolution of the Performance Line CX motor. While Bosch does not officially label it “Gen5,” the technical designation BDU384 sets it apart from its Gen4 predecessor, the...

Bosch Smart System (Bosch Gen4 BES3) This section covers tuning devices compatible with the Bosch Gen4 Smart System BES3 e-bike drive units introduced in 2022. Also known as Bosch Smart System 2022, "BES3" refers to "Bosch Development Stage 3"—a major leap forward into digital e-bike connectivity. Bosch simply refers to...

BOSCH GEN4 TUNING (2020/2021): WHAT YOU NEED TO KNOW Understanding Bosch Gen4 Anti-Tuning Protection Bosch Gen4 e-bike motors, introduced in model years 2020 and 2021, are equipped with integrated anti-tuning software. This system actively detects modifications and triggers Error Code 504, which drastically reduces or disables motor support. In such...

BOSCH GEN2 & GEN3 MOTORS – TUNING, COMPATIBILITY, AND KEY DIFFERENCES Bosch’s e-bike legacy Bosch, founded in Stuttgart in 1886, is one of the most respected names in engineering and technology—best known for its work in automotive systems, appliances, and power tools. In 2009, Bosch entered the e-bike market with...

BOSCH CLASSIC LINE ENGINES – WHERE IT ALL BEGANFounded in 1886, Bosch is a globally renowned German company recognized for its innovations in automotive technology, industrial solutions, building systems, and consumer goods. In 2009, Bosch launched its eBike Systems division, which quickly became a major success. Today, Bosch e-bike motors...

UNLOCK THE FULL POTENTIAL OF YOUR BOSCH E-BIKE Welcome to our in-depth guide on Bosch e-bike tuning. If you're looking to maximise performance and enjoy a more dynamic riding experience, you're in the right place. This guide covers everything you need to know: the different Bosch motor generations, tuning methods,...

  BOSCH RIM MAGNET – TECHNICAL OVERVIEW FOR THE SMART SYSTEM (BES3) Introduced in late 2021 and implemented across the 2022 model year, the Bosch Rim Magnet (BRM3400) is a core component of the Bosch Smart System (BES3). This system represents the 4th generation of Bosch e-bike drive units and...

    The Japanese company Shimano is without a doubt one of the most important manufacturers of high-quality bicycle components and accessories worldwide. Back in 2010, Shimano presented its first own e-bike drive system called “STEPS” (Shimano Total Electric Power Systems). Later, and exactly in 2014, Shimano released several new motors known...

  In 2022 Bosch released the new Bosch Gen4 Smart System which Bosch call it the "BES3" and stands for "Bosch Ebike System 3". For the general public, the new Bosch Smart System is also known as the Bosch Gen5. The main focus on the development of the BES3 was to expand into the digital...

The MAHLE Ebike Motion X35 and X35+ engines are designed specifically for e-road bike. The innovative Ebike Motion X35 and X35+ engine is a hub engine with only 40Nm of torque. In contrast to the conventional engines that provides assistance based on cadence or power input the Mahle engines the outputs power is based on how...

Rocky Mountain e-bike are well known for their high quality of built and their extremely powerful engines which make them one of the best e-bikes ever. The first Rocky Mountain engine was developed in 2009 but only in 2012 with the release of the 2nd generation engine (Dyname 2.0) the first engine was mounted...

      BOSCH: The Bosch engines were one of the first mid-mounted engines to be produced on a large scale. Thanks to their reliability and high performances they become very popular to the point that today they are the engines of choice for more than 50 e-bike manufacturers. It is...