Exhaust Bracket and Spacer Buying Guide for Custom Builds

By Yoshimura R&D of America, Inc. | Published: 2026-10-16

Category: Buying Guides

Match offset brackets, spacers, and clamps to your custom exhaust build. Learn fitment checks, material choices, and when to replace versus repair.

Quick answer

Buy an exhaust bracket or spacer only after measuring your stock mounting points, confirming the offset direction you need, and checking whether the part is a direct replacement or a performance upgrade. For most custom builds, start with a two-position offset bracket like the NINJA 300/250R Road Works Edition Rear Offset Brackets if you need more ground clearance, and use small hardware like the Aluminum Spacer HONDA 99-00 CBRF4 only when the gap is measured, not guessed.

Measure first: the three numbers that decide every bracket

Before you add any exhaust mounting hardware to a cart, write down three measurements from your bike: the distance between the stock mounting holes, the angle of the muffler can relative to the subframe, and the clearance between the exhaust and the swingarm or bodywork at full suspension compression. These numbers tell you whether you need a simple spacer, a replacement clamp, or an offset bracket that moves the muffler position entirely.

Offset brackets change both height and setback. For example, the NINJA 300/250R Road Works Edition Rear Offset Brackets offer two additional mounting positions beyond stock, with one position moving the controls 43mm back and 20mm up. That kind of change is useful when you are chasing lean angle or repositioning your body on the bike, but it also changes how your boot reaches the peg. Measure your current peg position and compare it to the bracket's stated offset before you commit.

Spacers, clamps, and small hardware: buy the exact part, not a generic kit

Small hardware is where custom builds go wrong. A spacer that is 1mm too long can crack a muffler bracket; a clamp that is too wide can crush a carbon fiber sleeve. The Aluminum Spacer HONDA 99-00 CBRF4 is a specific application part, not a universal fit, so it only belongs on your list if your build uses that exact mounting arrangement. If you are working on a different model, measure the outer diameter, inner diameter, and length of the spacer you need and match those numbers to the catalog listing.

Muffler clamps are similarly specific. The TRS Muffler Clamp Carbon Fiber W/Heatshield is designed to tighten a connecting point on a Yoshimura system while protecting a carbon fiber surface from heat and clamp pressure. If your exhaust uses a different joint style or diameter, this clamp may not seal correctly. When the catalog does not list a dimension you need, call or email the manufacturer with your bike model and exhaust part number rather than ordering three sizes and hoping one fits.

Repair or replace: when a damaged muffler changes your bracket plan

A tip-over that grinds a hole in a muffler sleeve often damages the bracket or clamp at the same time. Sometimes the muffler can be repaired, and sometimes replacing the muffler is the cheaper path. The 22842 YM9 TITANIUM SLEEVE W/BRACKET LEFT-HAND, 9" is a left-hand titanium sleeve with bracket, which means it addresses both the damaged outer surface and the mounting point in one part. If your damage is limited to the bracket or clamp, you may not need a full sleeve.

Inspect the mounting tabs on the subframe before you order anything. A bent tab will misalign even a perfect bracket, and no spacer will fix that. Straighten or replace the tab first, then measure again. If the muffler body itself is cracked or crushed, a sleeve or replacement muffler is the safer choice than trying to shim a damaged can into place.

Decision rules for exhaust bracket and spacer buying

If you need more ground clearance or lean angle: Choose a two-position offset bracket like the NINJA 300/250R Road Works Edition Rear Offset Brackets, which move the mounting point 43mm back and 20mm up. Confirm your boot still reaches the peg comfortably before you commit. Offset brackets are a performance change, not just a repair. Measure your current peg position first.
If you are replacing a worn or damaged clamp: Match the clamp diameter and joint style to your exhaust system. The TRS Muffler Clamp Carbon Fiber W/Heatshield is designed for Yoshimura systems and includes heat protection for carbon fiber, but it is not universal. Order by part number or measured diameter, not by appearance.
If you need a small spacer or piece of hardware: Use a specific application part like the Aluminum Spacer HONDA 99-00 CBRF4 only when your bike matches that application. For other builds, measure inner diameter, outer diameter, and length, then contact Yoshimura at 800-634-9166 or [email protected] with those numbers. A generic spacer kit is a false economy. Measure and ask before you buy.
If a tip-over damaged the muffler and bracket together: Assess whether the muffler can be repaired or whether replacement is cheaper. The 22842 YM9 TITANIUM SLEEVE W/BRACKET LEFT-HAND, 9" replaces both the left-hand titanium sleeve and its bracket in one part. Check the subframe mounting tab for bends before ordering; a bent tab will misalign any new bracket.

Product facts for custom exhaust mounting

NINJA 300/250R Road Works Edition Rear Offset Brackets: Yoshimura Rear Set Brackets feature two additional mounting positions over the stock location for increased possible ground clearance and lean angles, and enable more aggressive body positioning for better body and weight transfer. Two Position Adjustable: 43mm Back, 20mm Up 43mm Back. If you need more lean angle or a more aggressive riding position, these brackets give you two measured positions to work from instead of guessing at shims.
22842 YM9 TITANIUM SLEEVE W/BRACKET LEFT-HAND, 9": The 22842 YM9 TITANIUM SLEEVE W/BRACKET LEFT-HAND, 9" is a left-hand titanium sleeve with bracket. Yoshimura notes that tip-over damage to a muffler can sometimes be repaired and sometimes it is cheaper to buy a new muffler. When a left-side tip-over damages both the sleeve and its bracket, this part replaces both at once and may be more economical than repairing a crushed muffler.
TRS Muffler Clamp Carbon Fiber W/Heatshield: The TRS Muffler Clamp Carbon Fiber W/Heatshield is used to tighten the connecting points on a Yoshimura exhaust system. Yoshimura advises calling 800-634-9166 or emailing [email protected] if you cannot find the one you need. A clamp with a heatshield protects carbon fiber surfaces from clamp pressure and heat, but you still need the correct diameter for your system, so confirm fitment before ordering.
Aluminum Spacer HONDA 99-00 CBRF4: The Aluminum Spacer HONDA 99-00 CBRF4 is a small hardware component. Yoshimura sells rivets, rivet bands, nuts and bolts, and grommets, and advises calling 800-634-9166 or emailing [email protected] if you cannot find what you need. This spacer is application-specific, so it only works if your build matches that Honda application. For other bikes, measure your spacer dimensions and contact Yoshimura with the numbers.

Who this bracket and spacer advice is for

Best for

Riders building a custom exhaust system who need to reposition a muffler or rear set
Owners replacing a damaged clamp, spacer, or bracket on a Yoshimura exhaust
Builders who are willing to measure mounting points and confirm part numbers before ordering

Not for

Riders looking for a universal bracket kit that fits any bike without measurement
Owners who have not identified their exact exhaust model or mounting dimensions
Anyone trying to fix a bent subframe tab with a spacer instead of repairing the tab