NCY Calper Adapter (4-Piston); 245mm Disc
NCY Calper Adapter (4-Piston); 245mm Disc
$96.29
5 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
Description
NCY Calper Adapter (4-Piston); 245mm Disc is a replacement piston assembly for compatible 139QMB scooter engine repairs or rebuilds.
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Related Categories
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Code: 139QMB
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a 139QMB engine?
A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.
Additional information
| Weight | 0.35 lbs |
|---|---|
| Dimensions | 5.25 × 7.5 × 1 in |
The NCY Caliper Adapter is the essential mounting bracket that makes the NCY 4-piston brake caliper and 245mm floating disc rotor system possible on the Honda Grom and Honda Monkey. Stock fork legs on these platforms are designed around smaller OEM rotors and 2-piston calipers — this precision-machined adapter repositions the caliper to align correctly with the larger 245mm rotor, ensuring proper pad-to-rotor contact geometry and safe, consistent braking performance. Without this adapter, the NCY 4-piston caliper cannot be correctly mounted for use with the 245mm disc.
- Designed for use as part of the complete NCY brake upgrade system: NCY 245mm Floating Disc Rotor + NCY 4-Piston Caliper + this adapter for Honda Grom and Honda Monkey
- Precision-machined to correctly position caliper relative to the 245mm rotor surface
- Ensures proper pad-to-rotor alignment for safe, even braking
- Lightweight construction
- Sold individually
California Residents: This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.
