eBike Tuning Kit Planet3 for Rocky Mountain Altitude PowerPlay C50 2019

Regular price £139.00 Sale price£99.00 Save 29%
Thanks for signing up for restock notifications!
There was an error signing up for restock notifications. Please try again.

Be the first to know when this product is back in stock!

Notify Me



Planet3 is an easily installed and reversible way to derestrict your eBike. It uses a purely mechanical design utilizing a patent pending planetary gear set which makes it undetectable to the eBike's electronic gizmos and gives you full control over the choice of speed at which you want to ride your eBike. 

No more pushing through pudding after hitting the speed limit, virtually no maintenance and no worries. Just you and your eBike - the way it was meant to be!

PLANET3 is a planetary gear set which reduces the rotation speed of the magnet used by the wheel speed sensor three times. For every three full rotations of the rear wheel, the magnet completes just one full rotation - effectively making the bike think it's doing 1/3 the speed it is actually doing, thus increasing the pedal assist speed limit by a factor of 3. For the Specialized models sold on UK/EU market this translates into a speed limit increase from 15.5 to 47 mph (25 to 75 kmh), while the US and Canada models limit is raised from 20 to 60 mph.

Hub compatibility: 

DT Swiss - Any hub with a simple 19 mm diameter end cap profile (Roval, DT Swiss, Syntace, Stan's NEO) .

SRAM MTH746 - Formula DHT-148S rebranded as SRAM-MTH746.


Hope Pro4 - Comes with a CNC machined replacement end cap for the Hope Pro4 boost hub.

Brake disc compatibility: 

Stock - the brake rotor which comes stock on the bike.

Shimano XT - Shimano SM-RT76 or SM-RT86 two-piece rotor.

Hope Floating - Hope Floating two-piece rotor is compatible with the PLANET3 on Giant e-bikes.

Magura - Magura MDR-C or MDR-P rotors are within the allowed thickness at the 6-bolt interface.

Physical damage by outside factors such as rock strikes, caught branches and sticks is not covered by warranty. Buyer accepts the risk that crashing or having a branch caught between a rotor and a frame can damage a plastic device and this will not be covered by warranty.

It is possible to purchase an extra Planet3 part if the buyer is willing to do so. Please, contact us about it.


1 x PLANET3 device consisting of sun gear, ring gear and planet gear (with magnet)
3 x M5x10 ISO 14580 bolt with pre-applied Loctite 268

All Planet3 come complete with an instruction manual, you can also find a video tutorials below. 

If you have any questions regarding the setup please do not hesitate in contacting us, we are happy to help. 

Follow the installation Steps Below


Material: Hybrid PLA
Gear ratio: 3,35:1 (new speed limit = 3,35 x old speed limit)
Planet: Ø15 x 1,5mm Neodymium N35
Weight: 24 g
Dimensions: Ø70,6 x 6,8mm


Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use Planet3 products. Electric bikes equipped with Planet3 products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with Planet3 products can be used exclusively on private property and entirely at one’s own risk. The use of Planet3 may void the warranty of your eBike.

We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds. 

If You have any questions, please do not hesitate to contact us.
Thank you for looking!
Two Wheels Empire Team

#1 seller #1 SELLER

What Our Clients Say About It?