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Discontinued Product!
SpeedAngle Lap Timer / Data Logger has been discontinued and will not be returning
Replacement Product
SpeedAngle APEX Lap Timer / Data Logger
Out of Stock

SpeedAngle Lap Timer / Data Logger

Item: P289145

The GMOS JI100S is a one-of-a-kind data logger and lap timer developed for motorcycle enthusiasts. It incorporates many standard measuring functions s… Read More

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Product Details

SpeedAngle GMOS JI100S Lap Timer / Data Logger

The GMOS JI100S is a one-of-a-kind data logger and lap timer developed for motorcycle enthusiasts. It incorporates many standard measuring functions such as speed, lap time and G-forces. But the cherry on top of this sundae is the ability to track the rider’s lean angle up to 69 degrees! "Why is it important to know your lean angle?”, you might ask. The point of lean angle measurement is not how far you can lean, but to know exactly how and where you are leaning in a corner. This, plus the acceleration/deceleration G measurement and GPS trace, can clearly mark how hard and how long you are braking before entering a turn, what your cornering speed is, if the throttle is rolled on again before or after exiting the apex and more. Only when a motorcyclist knows how he/she is handling a turn can he/she master the art of cornering, and thus the skill of motorcycle riding.

Google Earth Replay

You can overlay your logs onto Google Earth and have your rides replayed in 3D on the satellite photo images of the track. There is no limit to the tracks that can be overlaid onto, as long as they are available on Google Earth. You can see your riding lines against the track border, and a 3D model bike lean and accelerate just as you did. This feature also allows you to compare your rides with your fellow rides as if you are in a virtual race.

Video Overlay

If you're somebody who records video on the track, SpeedAngle hasn't forgotten about you. The data that the GMOS JI100S collects can be overlaid onto a video with software from or, giving your video a MotoGP look.

Driving Mode for Cruising or Twisty Rides

The SpeedAngle isn't just for the track, if you're headed out for a low-key ride on the open road or out to tackle some twisties, you can choose to switch to Driving Mode. This mode shows your lean angles real-time with an angle meter, displays the max angles of your last three turns, and records your speed, G’s, lean angles and GPS traces.

Motion and Trace Features:

  • Real time lean angle up to 69 degrees
  • Max degree of left / right lean angles
  • Max angles of the last three turns
  • Real time longitudinal G of acceleration / deceleration up to +1.5G
  • Real time GPS speed up to 255 MPH / 410 KMH
  • 10Hz GPS trace mapping

Lap Timer Features:

  • Measures down to 1/1000th of a second
  • Lap time
  • Best lap time with time gap
  • Last lap
  • Lap length
  • Session time
  • Sector time
  • Auto track search
  • Auto finish line setup, no need for beacons 
  • Auto timer start/stop
  • Auto data logging
  • Auto lap record display
  • Up to 7 sector lines in one track (uploaded via software Track Manager)
  • Stores up to 15 Tracks
  • Track editable via software Track Manager
  • Lap time record report with motion data


  • GMOS JI100S unit
  • AMPS bracket and hardware
  • Sensor unit and stand
  • GPS antenna
  • USB cable
  • Hex key wrench
  • 3M dual lock tape
  • GMOS JI100 Quick Manual
  • SpeedAngle stickers

Note: Video overlay software not included.

Product Style RevZilla Item # MFR. Product # Availability
Product Style SpeedAngle Lap Timer / Data Logger RevZilla Item #997235 MFR. Product #JI100S AvailabilityOut of Stock


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Reviews & Questions

4.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bang For The Buck
3.2 / 5
4.3 / 5
4.0 / 5
Fit & Finish
3.7 / 5
Bang For The Buck
3 / 5
perfect for motorcycles, could be improved though.
Overall I like this laptimer. It is light weight and real easy to use. Three things could be better on the next version. 1), it needs a more secure connection to the base plate, 2) the remote GPS sensor wire that attaches should be either on top or made to curl under the body, the current one sticks straight out the bottom about 1 inch and will get knocked off real quick. 3) the USB rubber boot is useless - needs to seal up as these things will get rained on.
April 13, 2015
Bang For The Buck
2 / 5
4 / 5
3 / 5
Fit & Finish
2 / 5
No simultaneous angle and lap timing
Unless I'm missing something, after a thorough review of the unit and the downloaded manual, there is no way to run in the lap time mode, and record your lean angles at the same time. So when I'm at the track, I can either use timer mode to record my lap times, or use drive mode to record my max lean angle.

I believe this is subpar feature. I want to always record my lap times. Not have to switch back and forth.

I emailed the company directly from their website and it's been over a week and no one has answered me.

Also, I agree with the other reviewer. The connection to the baseplate is very flimsy. Any minor incident, probably even a minor low side or even a tip over and the unit will go flying off.

The cord connection is very tight though. Almost too tight. I have to really struggle to attach and unattach it.
July 27, 2017
1 year ago
Bang For The Buck
3 / 5
4 / 5
4 / 5
Fit & Finish
4 / 5
SPEEDANGLE, A Worthwhile buy
I use it alway whether it be track days or running in the SWAN Series. Great timer, and well featured for download diagnostics. The only thing I need/want to see when racing is lap times on there. I have put the bike down a few times and it has never come out of the bracket. Agree the socket is very tight, but easily fixed with some spray silicon. All tracks are preloaded, and automatically identify with your location. Only real criticism is when the memory is full, there is no warning and suddenly the lap times aren't getting any better
November 5, 2017
Bang For The Buck
5 / 5
5 / 5
5 / 5
Fit & Finish
5 / 5
Truly the best lap timer out there
I've tried many different types over the years and this one stands out. Small and accurate! as well as being easy to fit and remove.
April 15, 2018
4 Customer Reviews
4 4/5
3 Questions & 4 Answers
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