Tool-less upper guide flip enables fast, tool-free installation and adjustment
Single-tool installation and adjustment simplifies setup without removing the crank
Circuit-reinforced nylon and 8mm thick 7075 T6 aluminum construction withstands heavy impacts
Includes three bash plate sizes (28-30T, 32-34T, 36T) for broad chainring compatibility
Eliminates lower roller for reduced drag and improved chain retention, especially with clutch derailleurs
Summarized by Shop
Eliminate dropped chains forever with the new OneUp Components Bash Guide.
As the trend for lower and slacker bikes continues, chainring protection is becoming even more important. Revised for 2019 the OneUp Bash Guide uses simple, one tool installation and adjustment as well as an all new tool less flip
The OneUp Bash Guide was
Weight
90 g (28-30T), 105 g (32-34T), 110 g (36T)
Capacity
28-36T
Chainline
7.5 mm
Mount
ISCG05
Material
7075 T6 aluminum, glass reinforced thermoplastic
Color
Black
Summarized by Shop
4.8
31 ratings
5
4
3
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1
bash guard
Match my bike perfectly, comes with spares to fit exactly in your own bike, good material
C
carlos · February 20, 2026
Good and simple assembly
The title says it all
J
Johannes · May 14, 2025
Just works
Easy to install and set up (really clear instructions) and just works. Rock solid, even after a whole season of abuse.