The Shimano XTR BR-M9220 Brake Upgrade Kit delivers elite-level braking for riders who demand the absolute best on aggressive trails and enduro terrain. Featuring the powerful four-piston BR-M9220 calipers paired with ergonomically advanced BL-M9220 levers, this kit offers downhill-caliber stopping power with precise modulation and a consistent, confidence-inspiring bite.
Redesigned lever ergonomics align with the natural arc of your finger for improved feel and response, while a 5° upswept blade and tool-free reach adjust keep your hands dialed and ready to ride. Inside, Shimano’s latest low-viscosity mineral oil and upgraded internal seals ensure fade-free braking and a reliable bite point in any weather.
The rattle-free BR-M9220 calipers offer smooth performance with the option of either P03A-RF resin or P04C-MF metal pads (both included) so you can tune your brakes for feel or heat resistance. Whether you're charging through steep descents, braking late into corners, or navigating tight, technical lines, this system delivers the power and silence to stay fully in control.
Features:
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Powerful 4-Piston Calipers: Enduro-grade braking with a refined, trail-tuned power curve
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Ergonomic BL-M9220 Levers: New pivot placement and lever shape for enhanced feel and control
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Consistent Performance: Low-viscosity mineral oil and improved seals for reliable braking in all conditions
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Customizable Setup: Includes both resin and metal pads to suit your terrain and preferences
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Silent & Rattle-Free: Revised pad and mount design minimizes distractions
Specs:
Kit Includes
| Brake Set | M9220 4-Piston, Left & Right Brakes |
| Brake Pads | 2x Pair P04C-MF Metal Pads (Installed) |
| Brake Pads | 2x Pair P03A-RF Resin Pads (packaged) |
| Oil: | Shimano Low Viscosity Mineral Oil |
Brake Set
| Model: | M9220 Lever, M9220 Caliper |
| Position | Front/Left & Rear/Right Included |
| Series: | XTR M9200 |
| Caliper Pistons: | 4-Piston |
| Caliper Mount: | Post Mount |
| Brake Pads: | Metal, P04C-MF (Installed) |
| Lever Mount: | 22.2mm Clamp |
| Shifter Mount: | I-Spec EV Compatible |
| Hose: | SM-BH90-SBM (Front: 1000mm; Rear: 1700mm)(Included) |
Compatibility & Parts
The XTR BR-M9220 Brake Upgrade Kit is compatible with the following:
| Brake Pads: | P04C-MF Metal, P03A-RF Resin |
| Caliper: | XTR BR-M9220 4-Piston Caliper |
| Caliper Adapters: | Disc Brake Caliper Adapter |
| Lever: | XTR BL-M9220 Enduro Brake Lever |
| Lever Blade: | XTR BL-M9220 Enduro Lever Blade / Lever Member Unit |
| Hose: | SM-BH90-SBM Hose Kit |
| Olive & Barb: | BH90 Olive & Barb |
| Mineral Oil: | Low Viscosity Mineral Oil |
Please reach out to us with any questions you may have about anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options through FedEx and USPS.
Most orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.
Due to larger box sizes, handlebars, and other oversized items, an additional shipping fee will be applied.
Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is available at an additional charge depending on the exact delivery location.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee, depending on your location.
RETURNS
Should there be an issue with the item you bought, or if you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes incur a $200 restocking fee, and the customer is responsible for the return shipping costs.
Return Shipping
Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.
The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History section in your Account profile, or you can request that we email the label to you.
For all other return shipping methods, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after receiving your returned item(s) and inspecting their condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed. All refunds will be returned to the original payment method. No store credit or other refund methods are available.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong item(s), please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
