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The Bosch Performance Line CX

08.05.2025 |Know-How

The Bosch Performance Line CX motor is one of the most well-known and widely used drive systems in the e-bike world. And for good reason: with its powerful support, robust design, and smart technology, it performs just as reliably on trails as it does on daily commutes. At SIMPLON, we use two versions of this drive system: the proven CX Gen 4 and the upgraded CX Gen 5. In this article, you’ll learn what makes each motor unique, which rider type they suit best, and what differences you’ll notice while riding.

The Proven All-Rounder: Bosch Performance Line CX Gen 4

The CX Gen 4 has been a staple in the Bosch portfolio for years and powers many premium e-bikes. With up to 85 Nm of torque, it delivers strong support whether you're on trails, long tours, or daily routes.

Key facts about the Performance Line CX Gen 4:

Torque: 85 Nm
Weight: approx. 2.9 kg
Smooth and powerful, ideal for sporty tours and everyday use
eMTB mode: adapts support dynamically to your pedaling power
Compatible with 625–750 Wh batteries, depending on the model
Robust casing, proven technology

Who is the Bosch PL CX Gen 4 for?
Riders looking for a powerful, reliable motor for commuting, touring, or moderate trails.

Next-Level Trail Power: Bosch Performance Line CX Gen 5

The Gen 5 is the latest generation of the Performance Line CX and is tailored specifically to sporty e-MTB riders. It also delivers 85 Nm of torque, but with a noticeably more direct and aggressive feel. The redesigned casing is more compact and lightweight, and a new software feature unlocks even more trail fun: the optional CX Race Mode (availability depends on the bike model).

Key facts about the Performance Line CX Gen 5:

Torque: 85 Nm
Weight: approx. 2.9 kg
Extremely direct power delivery, ideal for steep terrain
Optional Race Mode for maximum propulsion
More compact design, optimized for modern frame sets
Perfect for demanding trails, fast acceleration, and aggressive riding styles

Who is the Bosch PL CX Gen 5 for?
Sporty e-MTB riders looking for maximum performance and agility on technical terrain.

Direct Comparison: Gen 4 vs. Gen 5

Feature	CX Gen 4	CX Gen 5
Torque	85 Nm	85 Nm
Ride feel	Powerful, smooth	Very direct, aggressive
Weight (Motor)	approx. 2,9 kg	approx. 2,9 kg
Battery	500 / 625 / 750 WH	400 / 545 / 600 / 800 WH / +800 WH Dual Battery Option
Geometry	Slightly larger	More compact, optimized for new frames
Software-Features	EMTB mode	eMTB mode + optional CX Race Mode
Ride characteristics	Strong, balanced support	Extremely responsive and punchy
Highlights	Proven all-rounder, 625–750 Wh batteries, long Performance	CX Race Mode, lighter housing
Use cases	Trekking, commuting, touring, SUV, light trails	Technical trails, performance riding
SIMPLON Bikes	Chenoa Max, Stomp SUV :e, Rapcon :eCX	Chenoa :e high,Kagu :e, Chenoa 365 :e, Sengo :e, Cure :e

Conclusion: Two Strong Motors for Your Riding Style

Whether you choose the CX Gen 4 or Gen 5, both Bosch motors impress with strong power, lasting performance, and intelligent assistance.

The Gen 4 is a versatile all-rounder for everyday and adventure use, while the Gen 5 is the top choice for sporty e-MTB riders who want to push limits on the trail.

Not sure which motor fits your riding style? Check out our e-bike product pages or use the SIMPLON bike configurator to design your perfect e-bike with a Bosch drive system.

Smart & Tailored: Which Bosch Display Is Right for You?

Want to know how far you can go, how fast you’re riding, or when your next service is due? With Bosch displays, you get exactly the info that matters to your riding style – from minimalist setups to fully connected systems with navigation, fitness data, and more. SIMPLON offers up to six smart solutions. Which display type are you?

System Controller – The Minimalist Choice

WHAT: LED display
FUNCTION: Change support mode, turn bike on/off, check battery level
WHERE: Integrated in the top tube, protected from shocks and scratches
WHO IT’S FOR: Minimalists who love a clean cockpit

Mini Remote – The Practical Add-On

WHAT: Compact handlebar remote that complements the System Controller
FUNCTION: Adjust support mode, light, walk assist, display control
WHERE: On the handlebar
WHO IT’S FOR: Riders who prefer intuitive thumb control

Intuvia 100 – The Classic All-Rounder

WHAT: 2.5-inch display with essential functions
FUNCTION: Battery status, anti-theft, range, trip duration, speed, clock, ride mode, shift recommendation, walk assist, service info
WHERE: Handlebar or stem
WHO IT’S FOR: Touring riders who want a clear overview

Purion 200 – Compact & Tough

WHAT: 1.6-inch color display
FUNCTION: Power and light control, walk assist, range, trip distance, speed, cadence
WHERE: Handlebar
WHO IT’S FOR: SUV and trail fans who need a robust, compact display

Purion 400 – Rugged for Harsh Conditions

WHAT: High-res 1.6-inch color display
FUNCTION: Water- and dustproof; controls light and power; displays range, distance, speed, cadence
WHERE: Between handlebar and stem
WHO IT’S FOR: E-MTB riders going all in

Kiox 300 – Smart & Connected

WHAT: Dust- and waterproof color display + digital key
FUNCTION: Shows route and fitness data, battery, time, speed; navigation, shift recommendations
WHERE: Handlebar
WHO IT’S FOR: Performance riders who love data

Kiox 500 – The High-End Display

WHAT: Extra-large dust- and waterproof color display + key function
FUNCTION: Shows route and fitness data, battery, time, speed; navigation with sound cues, shift recommendations
WHERE: Handlebar
WHO IT’S FOR: Tech enthusiasts who want maximum screen size and features

Lena L.

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