Spanish Basque bicycle manufacturer BH Bikes (Beistegui Hermanos) is pushing the boundaries of performance for lightweight road and gravel e-bikes. As part of its new collection, it introduces two key innovations: the gravel specialist iGRAVELX and the pure endurance road bike iRS1. Both models feature the powerful and compact SEG BLM mid-drive motor from the German giant SEG Automotive.
German Engineering from the Automotive Industry: SEG BLM Motor with a 5-Year Warranty
The German company SEG Automotive boasts over a century of history in electrical engineering, and its drive systems are used in over 300 million automobiles worldwide. It is now bringing its extensive automotive expertise to the e-mobility sector. The SEG BLM drive system is designed and manufactured directly in Europe, combining compact installation dimensions with high power density and an outstanding guarantee:
- 5-year motor warranty – proof of uncompromising durability and quality built on strict automotive standards.
- Low weight of just 2.1 kg – the motor doesn't burden the frame structure, preserving the bike's natural geometry, handling, and low center of gravity. On the flagship BH iRS1 Carbon model, it brings the total bike weight down to a mere 12.9 kg.
- Full-sized e-bike power – 80 Nm of torque and up to 700 W of peak power deliver uncompromising strength on the steepest climbs and rough gravel roads.
- Advanced sensor tech (1000 Hz) – contactless torque, cadence, and speed sensors evaluate data at a frequency of up to 1000 Hz, allowing the system to adjust assistance seamlessly and naturally in real time.
- Pure ride feel with zero mechanical drag – quiet operation paired with zero pedaling resistance. When the motor is turned off or exceeds the speed limit, it behaves just like a standard bicycle.
SEG eBike Ecosystem: Display, iButtons, and Connectivity
The SEG BLM drive system is designed as a fully integrated ecosystem for modern cycling:
Top Tube Integrated Display
An integrated, high-brightness five-color display shows speed, assistance mode, battery level, cadence, wattage output, and ANT+ connectivity. It can also charge your smartphone on the go.
Handlebar iButtons
Wireless handlebar buttons, powered directly from the main battery, allow instant and reliable mode switching without taking your hands off the bars.
App and Over-The-Air (OTA) Updates
Through the SEG Automotive eBike Systems mobile app, you can customize up to 5 assistance parameters per profile, track ride metrics, connect a heart rate strap via BLE, or download OTA software updates remotely. Extensive compatibility with Garmin bike computers is also included.
Massive 810 Wh Range with Dual Discharge Technology
The Dual Discharge system intelligently manages energy from two sources simultaneously, ensuring a continuous, uninterrupted delivery of power:
Frame-Integrated Battery
- 630 Wh (housed inside the profiled down tube)
XPro Auxiliary Battery (Range Extender)
- 180 Wh shaped like a water bottle
With a total capacity of 810 Wh, it achieves an estimated range of up to 190 km (150 km main battery + 40 km XPro extender), making both models reliable companions for all-day Alpine passes and long-distance bikepacking trips.
BH iGRAVELX & BH iRS1: Two Concepts and a Lifetime Frame Warranty
Both models utilize advanced HCIM (Hollow Core Internal Molding) construction technology, combining High Modulus carbon with Ballistic Carbon Layup for high impact resistance against flying stones and debris. Proof of this meticulous craftsmanship is the Lifetime Warranty on the frame provided by BH Bikes upon registration.
BH iGRAVELX
The off-road gravel specialist features a full carbon fork with massive tire clearance up to 50 mm, an integrated charging port below the seat tube, and multiple mounting points on the frame and fork for bikepacking bags. All cables are routed 100% internally through the ICR/ACR system.
BH iRS1
A pure road platform focused on aerodynamics and long asphalt routes. It offers an aerodynamically shaped fork, an integrated cockpit, tire clearance up to 32 mm, and balanced endurance geometry. The iRS1 lineup enters the market in both premium carbon builds (including Shimano Di2 electronic shifting and FSA carbon wheels) and a more accessible aluminum frame option.
🚫 Speed Limit Tuning / Unlocking Option Now Available 🚫
For the new SEG BLM motor, a software speed limit tuning option (speed de-restriction) is now available. Without requiring any mechanical modifications or additional hardware installations, you can unlock the full performance potential and maximum speed assistance for sport riding.
