Fork Bushing Burnishing Tool — Full Set | RMS
Fork Bushing Burnishing Tool — Full Set | RMS
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Every fork that comes through your stand. Covered.
A shop that can only service some forks isn't fully equipped. When a Mezzer comes in and you've got a 35mm head but not a 37mm, the job doesn't get done. The RMS Full Set eliminates that problem entirely.
Handle plus all seven burnishing heads covering every current MTB fork stanchion diameter. One tool, one storage tray, zero gaps in your service capability. Select the +size that matches your shop's approach — or go all three and have every situation covered.
The tactile feedback process that makes RMS the professional standard hasn't changed. Every head, every size, every fork: the tool tells you when the job is done.
Foam storage tray included. Precision machined in BC, Canada.
Need individual sizes? Shop additional heads →
Individual rider? See the Starter Kit →
Why Every Fork In Your Shop Deserves This Service
Fork bushings have a PTFE lining on an aluminum backing. Over time — and sometimes right out of the factory — they go slightly out of round or end up with bore geometry that doesn't match the stanchion correctly. The result is uneven contact: high spots that drag on the stanchion instead of a smooth, consistent oil film supporting it uniformly around the full circumference. The fork feels harsh and unresponsive, especially at small-bump inputs where the force isn't enough to push through the static friction.
The burnishing head is machined slightly larger than the nominal stanchion diameter. Pressing it through the bushing corrects the bore — re-rounding it and sizing it to a precise, controlled fit. No seals need to be removed. The process takes minutes and the result is permanent.
Who This Is For
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Bike Shops
Cover every fork that comes through the door. The Full Set gives your techs the right head for any job — 32mm through 40mm — without hunting for the right size mid-service.
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Suspension Service Centers
Running a dedicated suspension service operation? This is the professional standard kit. One handle, seven heads, foam-protected storage — everything organized and ready.
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Garage Service Operators
Running your own one-person service operation? The Full Set means you're ready for any fork any customer brings in, without ordering individual heads piecemeal over time.
Tool Features
• Complete professional kit — handle plus all seven heads covering 32mm through 40mm, everything needed to service any fork that comes through the door
• Foam-protected storage included — heads ship in precision-cut foam tray sets, top and bottom inserts per +size, keeping every head organized and protected between uses
• Self-aligning head geometry — centers itself as you press through; no fighting alignment mid-pass
• No seal removal required — cleaner and faster than traditional bushing service methods
• High-strength polished steel heads — surface finish optimized to retain lubricant and minimize drag during the burnishing pass
• Large-diameter ergonomic handle — comfortable under real working load; no hand fatigue during back-to-back services
• Titanium hardware throughout
• Interchangeable heads — heads and handle sold separately for customers who need to expand later
• Made in Canada
Fork Compatibility Guide
Find your fork to confirm stanchion size and the correct head to order.
| Brand | Model | Stanchion | Head needed | Covered |
|---|
BOS & EXT note: The BOS Idylle 2021+, Idylle SC 2021+, Obsys, and EXT Vaia have stanchion dimensions or bushing designs that cannot be burnished with this tool. No head is currently available for these forks.
Not sure? Measure your stanchion directly with calipers if your fork isn't listed, or contact us at info@rmsuspension.com.
Frequently Asked Questions
Can I add more +sizes to my Full Set later?
Yes. If you bought the Full Set with a single +size and want to add another complete set of heads in a different +size, order the Full Set of Heads Only option on this page. Each additional +size ships with its own foam tray set.
How do I know if my fork needs bushing sizing?
The clearest sign is a fork that feels harsh, sticky, or unresponsive — especially at small bumps — and doesn't improve meaningfully after a full service with fresh oil and seals. If the fork feels acceptable right after a service but degrades within the first ride or two, that's a strong indicator the bushings need sizing.
Which +size should I use?
It depends on how sticky the fork feels. If the fork generally feels okay but not great, and doesn't degrade quickly after a service, the +.07mm is likely sufficient. If the fork feels noticeably sticky or harsh, or degrades within the first ride after a service, start with +.10mm. If the fork still has stiction after burnishing with +.10mm, move to +.13mm. Important: for +sizes larger than +.10mm, always run the +.10mm head through first — some forks have very tight bushings that make jumping straight to a larger +size difficult. The +.10mm gets the majority of forks feeling great on its own.
Will the bushing end up exactly at the +size diameter after burnishing?
No. The PTFE bushing material has spring-back after the tool passes through — the bore shrinks back down once the head clears. The larger the +size used, the more spring-back occurs, so the relationship between head size and final bushing diameter is not linear. All three +sizes (+.07, +.10, +.13mm) will result in a final bushing clearance in the ideal range of approximately .05–.10mm (.002"–.004"), which provides the right amount of clearance for proper oil film formation without excessive play.
Can I over-burnish or damage the bushings?
No. You cannot over-burnish — you could work each bushing for an hour and not go too far. As you pass the tool back and forth, resistance will gradually decrease until it levels off and becomes constant. That plateau is your signal that the bushing is done. It's normal for upper and lower bushings to feel slightly different from each other — what matters is that each pair feels consistent side to side.
Will there be play in my fork after burnishing?
All forks have a small amount of clearance between the bushings and stanchions by design — zero clearance would mean the fork couldn't move. That clearance means there is technically some play present before you even start, and burnishing doesn't meaningfully increase it. The correct amount of play after sizing should be essentially unnoticeable while riding and barely detectable in a static test. Note: what feels like fork play in static parking lot tests is often a loose headset or brake caliper float, not bushing clearance.
Do I need special oil for burnishing or after burnishing?
Use whatever oil your fork manufacturer specifies. No special oil is needed for the burnishing process itself. One tip: thicker oils will mask bushing clearance better than thinner oils, so oil weight is worth considering alongside bushing sizing when chasing feel.
Does this tool work on rear shocks?
No. This tool is designed specifically for fork lower leg bushings and is not compatible with rear shocks.
What's included with the Full Set?
The Full Set includes the handle and all seven burnishing heads covering 32mm through 40mm standard stanchion diameters. Heads are shipped in precision-cut foam tray sets — two inserts per +size (top and bottom) — keeping every head organized and protected. One foam set is included per +size ordered.