As the trend toward lower, slower bikes continues, chainring protection becomes even more important. Revised for 2019, the OneUp Bash Guide uses simple one-tool installation and adjustment, plus an all-new less flip tool.
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The OneUp Bash Guide was developed with input from the world's best riders and can be seen all over this year's tour. Reinforced nylon bottom guards and a backplate cut from 8mm thick 7075-T6 aluminum ensure the OneUp Bash Guide can handle the biggest hits, but at just 105g (34t), you might forget it's even there.
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\nnot just for enduro racers.
The OneUp Bash Guide is equally at home on your trail bike, where the added bash protection is a must for aggressive riders, or on your DH rig. With the popularity of clutch derailleurs, it's no longer necessary to run a chain guide with a lower roller to effectively tension your chain. DH riders and bike park rippers will appreciate the huge drag reduction from eliminating the lower roller, without sacrificing strength or chain retention.
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The OneUp Bash guide includes 3 different baseplate sizes for compatibility with 28-36 tooth chainrings.
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\nfeatures
\nTool-free upper guide tilting
\nInstall without removing your crank
\nsingle tool installation and adjustment
\ncompatible with boost
\nOval compatible
\nblack stainless steel hardware
Includes 3 bash plates (28-30t, 32-34t, 36t)
\nUS patented 10,053,188 other patents pending
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\nGuide setup instructions
\n1. Remove the upper guide by removing the front upper guide nut with a 4mm hex (never adjust the rear t25 bolt).
2. Place the slider in the highest position (insert a 4mm into the hole at the bottom left of the upper device with the chain link symbol and move it back counterclockwise)
\n3. Hold the backplate directly against the iscg05 tabs. Check the clearance between the back of the baseplate/guide and the bike frame (use the supplied 2.5mm spacers if necessary to move the backplate away from the frame).
\n4. Rotate the backplate until the slider adjustment bolt is directly above the crank axle and tighten the bolts to 5 nm
\n5. Once the crankset and chain are installed, use a spacer to measure the clearance between the backplate and the chain.
6. Determine the corresponding number of chainline shims needed
\n7. If more than 5 shims are required, install the supplied 2.5mm washers behind the back plate and return to step 2
\n8. Assemble the upper guide with the spacers and tighten the bolt to 3 nm
\n9. Insert a 4mm hex into the hole in the inner upper guide, loosen the height adjustment bolt, and lower the tool onto the chain. Tighten to 3 Nm to adjust the height.
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\nbash replacement instructions
1. Remove the bash guide from the bike
\n2. Remove the bolt retaining clip from the rear base plate bolt by pushing a 4mm hex through the bolt from the rear of the guide.
\n3. Remove the bash bolts using a 5mm hex.
\n4. Select the desired bash plate and reinstall the 6nm bash bolts
\n5. Reinstall the bolt retaining clip onto the rear base plate bolt
6. Reinstall the bash guide on the bike
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