Three bash plate sizes (28-30T, 32-34T, 36T) provide compatibility with a wide range of chainrings for versatile fit
Install without removing your crank, allowing for quick and convenient setup
Single-tool installation and adjustment simplifies the process for most users
Stainless steel hardware ensures durability and corrosion resistance
Boost and oval compatible for use with various drivetrain setups
Summarized by Shop
If you're not looking for chain retention or your bike has an integrated chain guide, you can still add some bash protection with the OneUp ISCG05 Underbash.
The Underbash includes 3 different sizes of bash plate for compatibility with chainrings from 28-36T. Designed for frames with 2 ISCG05 tabs only (Evil, Rocky Mountain, etc). If
Weight
68 g (32-34T)
Capacity
28-36T
Chainline
2.5 mm
Mount
ISCg05, 2-bolt only
Material
7075 aluminum, glass reinforced thermoplastic
Color
Black
Summarized by Shop
4.9
36 ratings
5
4
3
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1
Amazing
I have 50/50 so many trees and my sprocket is unscathed 10/10 works great
A
Andrew · August 6, 2026
Get your bash guard
It’s great. Saved my chain at least once since riding in the rough. Easy to install . Worth every penny