KELLYS Theos RSE70
All-suspension e-MTB for demanding riders. The powerful Panasonic GXM MAXXPRO 105Nm motor, 820Wh battery and fully sprung frame with mullet wheels ensure performance, comfort and confidence on challenging terrain. Ideal for long trails, mountain trips and multi-day adventures.
Expected delivery date 1Q - 2Q / 2026
Need help?
% Discount on purchase
PANASONIC GXM MAXXPRO
105 Nm
820 Wh
11 speeds
29", 27,5"
140 mm (front)
Shock absorber ROCK SHOX Super Deluxe DebonAir+ R (210x55 mm)
The ultimate rear shock designed for full suspension mountain bikes, combining excellent responsiveness, stability and control. Thanks to the innovative DebonAir+ system, it provides exceptionally smooth operation and optimal support throughout the entire travel range.
- DebonAir+ Chamber
- Hydraulic Bottom Out (R HBO)
- Durable Construction
- Simple Setup
RockShox Recon Silver RL 29″ Boost 140 mm - reliable fork for trail and e-MTB
The versatile and powerful RockShox Recon Silver RL front fork. With a BOOST 15×110 mm axle and 140 mm travel, it's ready to handle demanding trails, enduro and everyday mountain riding. With Solo Air suspension, easy adjustment to rider weight and Motion Control with adjustable compression and external rebound, you have perfect control over the fork's action. 32mm steel sliders with Fast Black finish.
Electric bikes with a mullet setup (a combination of a 29" front and 27.5" rear wheel) are becoming increasingly popular among enduro and trail riders. This concept brings the benefits of both wheel sizes, improving off-road handling.
- Better off-road handling
- Improved stability
- Better handling
- Lower centre of gravity
- A more natural ride feel
KELLYS Theos RSE70 - e-MTB for demanding riders and long trails
The KELLYS Theos RSE70 electric bike is the ultimate full-suspension e-MTB model that combines performance, comfort and versatility. It is designed for riders who want a reliable machine for demanding trails, long trips or mountain expeditions. Thanks to modern frame geometry, full suspension and quality components, it can handle technical terrain and long rides with confidence and stability.
Powerful engine and long range
At the heart of the bike is the Panasonic GXM MAXXPRO mid-motor with 105 Nm of torque, which provides smooth and powerful assistance during take-offs and steep climbs. The integrated 820 Wh battery allows for a range of up to 140-200 km, so the bike can handle day trips and multi-day adventures without compromise.
Fully suspended frame and mullet wheels
The 6061-T6 aluminum alloy frame is designed with Think Link® technology and a Boost rear axle for stiffness and precise bike handling. Suspension consists of a RockShox Psylo Silver RC front air fork and RockShox Select DebonAir+ rear shock for comfort and confidence even on challenging terrain. The Mullet wheel configuration - 29" front and 27.5" rear - combines stability at speed with agility in technical passages.
Components and controls
The bike is equipped with 1×11 gears, hydraulic disc brakes and quality components to ensure reliable performance in any deployment. This allows the rider to enjoy the ride to the fullest without compromise.
For whom the RSE70 is suitable
- For riders who want a powerful full suspension e-MTB capable of tackling technical trails and long mountain routes.
- For riders looking for long range, a strong engine and reliable suspension.
- For users who appreciate comfort, stability and versatility on varied terrain.
The KELLYS Theos RSE70 is a versatile, powerful and reliable e-MTB that can handle demanding trails and longer trips. The combination of a powerful motor, large battery, full suspension and modern design makes it the ideal choice for any rider who wants to ride without compromise.
KELLYS BICYCLES s.r.o. now offers an extended warranty of 5 years. This extended warranty covers the frame of the e-bike and its claim when a manufacturing or material defect is proven to be the cause.
E-bike range calculator
Flat
Medium
Hills
The e-bike range is approximately
*Factors affecting total range include technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique
Motor Panasonic GXM MAXXPRO
MAXXPRO – a revolutionary new e-bike drive system. Designed to deliver full power without unnecessary weight. The GXM MAXXPRO motor, developed jointly by Kellys and Panasonic, has a torque of 105 Nm and weighs just 2.56 kg, with a special magnesium alloy casing. Optimized cooling and mounting. The combined motor and battery system weighs approximately 6.1 kg. Modular and modern electronics: Open architecture, over-the-air (OTA) update capability, and compatibility with various batteries via CAN bus (open system).
Battery Kellys Maxxpro 820 Wh
Kellys, in cooperation with German battery manufacturer BMZ, presents a new series of batteries called Maxxpro, which excel in high energy density. Energy density is the amount of energy stored in a given amount of material, measured in Wh/kg. Carbon batteries are up to 20% lighter and offer higher capacity. The batteries weigh approximately 3.5 kg. To achieve low weight and high energy density, Kellys used an all-carbon battery body.
PANASONIC GXM Center Display 501
A highly modern central display designed for e-bikes with Panasonic drives. This display provides a clear overview of all key information – from speed, range, and assistance level to navigation and connection to a smart app via Bluetooth® 5.0. Enables stable and fast connection to smartphones and Panasonic apps, including firmware updates and ride data transfer. Intuitive navigation. The display provides information on speed, range, battery status, assistance mode, and other bike functions. The display is resistant to water, dust, and vibrations, and is readable even in direct sunlight.
GXM Remote 501
A modern control unit located on the handlebars, designed for intuitive control of e-bikes equipped with Panasonic GX series drives. The controller allows quick and safe switching between assistance levels and control of additional functions. Designed to be easily accessible with your thumb, minimizing the need to take your attention off driving. Ergonomic design. Intuitive button layout. High durability. Fast response and precise control. Seamless integration with Panasonic GX and GXM series motors and displays.
Designing and manufacturing e-bikes is not just about putting mechanical components together. It's more than that. The purpose for which an e-bike is created is important, because it has a unique purpose in each person's life. This mission gives every KELLYS e-bike its reason for being. Thanks to modern technology, skilled designers and the best materials, the Kellys brand has some of the highest quality e-bikes.
We are specialists in KELLYS electric bikes. We offer full suspension and fixed mountain bikes, touring bikes, men's and women's electric bikes with an excellent price / performance ratio.
Contact: KELLYS BICYCLES CZECH REPUBLIC s.r.o., Havlickova 426, 753 01, Hranice, Czech republic, e-mail: infocz@kellysbike.com, phone: +420 581 698 810, web: https://kellysbike.com
Parameters
General
| Model year | 2026 |
| Brand | Kellys |
| Frame size | Frame L, Frame S, Frame M |
| Load capacity | 120 kg |
Motor
| Engine manufacturer | Panasonic |
| Engine type | Panasonic GXM MAXXPRO |
| Centre engine | Yes |
Battery
| Precise capacity | 820 Wh |
| Battery capacity | 800 - 899 Wh |
Transmission
| Sort by | Shimano Deore XT Linkglide SL-M8130-R Rapidfire Plus (I-Spec EV) |
| Number of gears | 1x11 |
Components
| Saddlebag | Limotec D1 Remote Telescopic - diam 30.9 mm / length 445 mm, travel 170 mm |
| Saddle | Selle Royal SRX Plus |
| Handlebars | KLS Active RiseBar - diam 31.8 mm / rise 18 mm / width 760 mm |
| Extender | adjustable SATORI FASTBACK a-head - diam 28.6 mm / bar bore 31.8 mm / length 50 mm |
| Coats | Schwalbe Johnny Watts 60-622 |
Brakes
| Rear brakes | Shimano Deore BR-M420, 4-piston, hydraulic disc, 203mm |
| Front brakes | Shimano Deore BR-M420, 4-piston, hydraulic disc, 203mm |
Suspension
| Shocks | ROCK SHOX Deluxe Select, DebonAir+ / R damper (210x55 mm) |
| Front fork | ROCK SHOX PSYLO SILVER RC 29“ 15x110mm, 140mm |
Questions
Please provide your contact information and in the field Message enter your question and we will get back to you shortly.