Chigee SR-1 Radar System
Original price was: $199.95.$59.98Current price is: $59.98.
| Category | US | EU | UK | Chest (in) | Waist (in) | Hips (in) |
|---|---|---|---|---|---|---|
| Men | XS | 44 | 34 | 32-34 | 26-28 | 33-35 |
| S | 46 | 36 | 34-36 | 28-30 | 35-37 | |
| M | 48 | 38 | 38-40 | 32-34 | 39-41 | |
| L | 50 | 40 | 42-44 | 36-38 | 43-45 | |
| XL | 52 | 42 | 46-48 | 40-42 | 47-49 | |
| Women | XS | 32 | 6 | 31-32 | 24-25 | 33-34 |
| S | 34 | 8 | 33-34 | 26-27 | 35-36 | |
| M | 36 | 10 | 35-36 | 28-29 | 37-38 | |
| L | 38-40 | 12-14 | 37-39 | 30-32 | 39-41 | |
| XL | 42 | 16 | 40-42 | 33-35 | 42-44 | |
| Youth | XS | 128 | 7 | 26-28 | 23-24 | 26-28 |
| S | 134 | 8 | 28-30 | 24-25 | 28-30 | |
| M | 140 | 10 | 30-32 | 25-26 | 30-32 | |
| L | 146 | 12 | 32-34 | 26-27 | 32-34 | |
| XL | 152 | 14 | 34-36 | 27-28 | 34-36 |
| Category | US | EU | UK | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|---|---|---|
| Men | 28 | 44 | 28 | 28 | 34 | 30 |
| 30 | 46 | 30 | 30 | 36 | 31 | |
| 32 | 48 | 32 | 32 | 38 | 32 | |
| 34 | 50 | 34 | 34 | 40 | 33 | |
| 36 | 52 | 36 | 36 | 42 | 34 | |
| Women | 0 | 32 | 4 | 24 | 34 | 30 |
| 2 | 34 | 6 | 25 | 35 | 30 | |
| 4 | 36 | 8 | 26 | 36 | 31 | |
| 6 | 38 | 10 | 27 | 38 | 32 | |
| 8 | 40 | 12 | 28 | 40 | 32 |
| Category | US | EU | UK | Foot Length (in) |
|---|---|---|---|---|
| Men | 6 | 39 | 5.5 | 9.25 |
| 7 | 40 | 6.5 | 9.625 | |
| 8 | 41 | 7.5 | 10 | |
| 9 | 42 | 8.5 | 10.25 | |
| 10 | 43 | 9.5 | 10.625 | |
| 11 | 44 | 10.5 | 11 | |
| 12 | 45 | 11.5 | 11.25 | |
| 13 | 46 | 12.5 | 11.625 | |
| Women | 5 | 35 | 2.5 | 8.5 |
| 6 | 36 | 3.5 | 8.875 | |
| 7 | 37 | 4.5 | 9.25 | |
| 8 | 38 | 5.5 | 9.625 | |
| 9 | 39 | 6.5 | 10 | |
| 10 | 40 | 7.5 | 10.25 | |
| 11 | 41 | 8.5 | 10.625 | |
| 12 | 42 | 9.5 | 11 | |
| M (Unisex) | 5 | 37 | 4.5 | 8.75 |
| 6 | 38 | 5.5 | 9 | |
| 7 | 39 | 6.5 | 9.5 | |
| 8 | 40 | 7.5 | 10 | |
| 9 | 41 | 8.5 | 10.25 | |
| 10 | 42 | 9.5 | 10.625 | |
| 11 | 43 | 10.5 | 11 | |
| 12 | 44 | 11.5 | 11.25 |
Eyes forward. Radar watching your back.
SR-1 is an automotive-grade 77GHz millimeter-wave radar built for motorcycles. With four active warning modes and a detection range of up to 70 meters, it keeps a constant watch on the space behind you — through rain, fog, and darkness — so you can ride with your eyes forward and your confidence intact.
Unlike conventional radar systems adapted from automotive use, SR-1 is built specifically for motorcycles and the way riders actually move through traffic. It does more than detect what is behind you — it delivers earlier, more relevant warnings for blind-spot traffic, lane changes, overtakes, and fast-closing vehicles from the rear.
And unlike systems that only alert the rider, SR-1 can also trigger an active rear warning light to help make approaching drivers aware of your presence sooner. The result is a radar system designed not just to detect traffic, but to work more naturally in real riding conditions.
Four active warning modes.
The SR-1 runs four independent warning algorithms simultaneously, each tuned to a specific riding scenario.
Note: The radar module and indicator light provide visual warnings only and do not produce sound alerts. To receive audible warnings, you need to pair the radar module with a CHIGEE Display and enable the sound alert option in the settings.
Blind Spot Detection (BSD)
Detect vehicles in your blind spot before you change lanes.
Once your speed exceeds 10 km/h, SR-1 automatically monitors the blind spot area beside and behind your motorcycle. If a vehicle enters that zone, the system sends a visual and audible warning to help you notice nearby traffic earlier when changing lanes or riding in dense traffic.
Active Overtake Alert (AOA)
Know if another vehicle is approaching from behind before you move back into the lane after overtaking.
After you overtake another vehicle, SR-1 checks the lane again before you move back in. If another vehicle is approaching from behind or remains in the blind spot, the system warns you in time so you can merge back more safely.
Lane Change Assist (LCA)
Get lane change warnings that adjust to your riding speed and surrounding traffic.
SR-1 adjusts warning timing based on your speed and the relative speed of surrounding vehicles. At higher speeds, alerts come earlier to give you more time to react. In slower traffic, unnecessary warnings are reduced so the system stays helpful without becoming distracting.
Rear Collision Warning (RCW)
Know sooner when a vehicle is approaching quickly from behind.
If SR-1 detects a possible rear collision risk, it sends a warning immediately. This gives you more time to stay aware, keep your motorcycle stable, and react to a fast-approaching vehicle behind you. Warning sensitivity can also be adjusted to better match different traffic conditions and rider preferences.
Warn Yourself — And Warn the Vehicle Behind You
Most blind-spot systems alert only the rider. The SR-1 takes it a step further. An integrated high-brightness strobe light is built directly into the radar module. When a vehicle is detected closing dangerously fast from behind, the light flashes automatically — alerting the approaching driver to back off before a collision becomes likely. Particularly effective at night or in low-visibility conditions, this turns the SR-1 from a passive sensor into an active road-safety device.
Pairs with Compatible CHIGEE Displays
When paired with a CHIGEE display, SR-1 can bring radar information onto the screen in real time, giving you another layer of situational awareness beyond the warning lights alone.
You can also adjust selected warning parameters to better suit your riding style and environment, making the system feel more personal and more relevant to the way you ride.
Tune warnings to match your ride
SR-1 lets you adjust how the system warns you, with control over sensitivity, activation speed, and alert intensity. Through the CHIGEE display or mobile app, you can tailor alert behavior to suit different roads, traffic conditions, and riding preferences.
The result is a warning setup that feels more relevant, less distracting, and better suited to the way you actually ride.
Built to improve over time
SR-1 supports Bluetooth OTA updates, allowing the warning system to keep evolving through future refinements. As more riding data and real-world scenarios are incorporated, alert logic and detection performance can continue to improve over time.
