DRIVETRAIN·Gearbox
CYC X1 Pro Complete Gearbox
●OEMOEM# 1207-PROBAS-01
$247.99
$12 flat shipping
ByBonnell
Currently Unavailable
Can't find what you need? Request this part →
$12 flat shipping
every US order
OEM & aftermarket parts
brand listed on each page
Fitment checked per model.
Ask us if unsure.
30-day returns
unused parts
VisaMastercardAmexApple PayGoogle Pay
- →Replacement complete gearbox for the CYC X1 Pro Gen 4 motor used in the Bonnell 775 MX. Supplied pre-assembled with brass gears (CYC default). Replace when gears wear.
- →Direct OEM replacement — exact fit guaranteed
- →Verified fitment for 1 bike model
About the Gearbox
Replacement gearbox for CYC X1 Pro motor (used in Bonnell 775 MX). Brass gears standard. Keeps power delivery consistent and reliable.
Fits: 775 MX
Install & Care
Skill Level
Intermediate
Install Time
30–60 min
Tools Needed
Chain breaker, socket set
Maintenance
Every 8–10 hrs
Refer to your bike's service manual for installation torque specs. When in doubt, consult a qualified electric motorcycle technician.
Fits These Bikes
1 modelSpecifications
OEM Part Number
1207-PROBAS-01
Brand
CYC
Model
X1 Pro
Gear Type
brass (default)
Compatible Motor
X1 Pro Gen 4
More drivetrain Parts
All Bonnell Parts →
OEM
Bonnell 775 MX Custom Sprocket (24T - Stock)
$44.99
OEM
CYC X1 Pro Gen 4 Mid-Drive Motor Kit
$1,499.99
Aftermarket
DID 420 NZ3 Connecting Link - Clip Type (Pack of 5)
$3.99Currently unavailable
OEM
KMC e10 EPT eBike Chain - 10-Speed, 136 Links
$81.99
Aftermarket
KMC e1 Single-Speed eBike Chain - 3/32", 110 Links
$62.99
Aftermarket
CYC BCD-104 Narrow-Wide Chainring - 38T
$31.99Currently unavailable
More parts for the 775 MX
All 775 MX parts →- Bonnell 775 MX A65 Battery Pack
- CYC Full Twist Throttle + Matching Grip
- Crankbrothers Stamp 1 Gen 2 Flat Pedals - Black, Large
- Deity Knuckleduster Lock-On Grips - Stealth
- Magura 8.R Race Disc Brake Pads (MT5 / MT7 4-Piston)
- Magura 9.C Comfort Disc Brake Pads (MT5 / MT7)
- Magura 9.P Performance Disc Brake Pads (MT5 / MT7) (2701627)
- Magura 9.S Sport Disc Brake Pads (MT5 / MT7, E-Bike)
- Magura HC Aluminum 1-Finger Brake Lever - MT5 (Black)
- Magura MDP 13 Brake Pads - Organic (4-Piston)
- Magura MDR-C 220mm Front Disc Rotor (6-Bolt, E-Bike)
- Magura Royal Blood Mineral Oil - 100ml
Reviews
0 reviewsNo on-site reviews for this part yet.
Bought recently? Leave a Google review for Wired Whips — it helps other riders and unlocks store credit on eligible orders.