This all-in-one kit includes left and right M9220 brakes (BL-M9220 levers + BR-M9220 4-piston calipers), your choice of rotors, bleed kit, low-viscosity mineral oil, and an extra set of resin pads.
The BL-M9220 levers feature refined ergonomics, a closer pivot point, and tool-free reach adjust for smooth, controlled braking. SERVO WAVE tech enhances power and modulation with minimal friction.
The BR-M9220 calipers deliver top-tier power and consistency in the XTR range, with low-viscosity oil for a stable bite point in any conditions and redesigned pads that eliminate rattle. Built for silent, precise control on the toughest trails.
While brakes are pre-bled, we've included a bleed kit and a bottle of the new low-viscosity mineral oil for your maintenance needs.
Features:
-
Powerful 4-Piston Calipers: Enduro-grade braking with a refined, trail-tuned power curve
-
Ergonomic BL-M9220 Levers: New pivot placement and lever shape for enhanced feel and control
-
Consistent Performance: Low-viscosity mineral oil and improved seals for reliable braking in all conditions
-
Customizable Setup: Includes both resin and metal pads to suit your terrain and preferences
-
Silent & Rattle-Free: Revised pad and mount design minimizes distractions
Specs:
Kit Includes
| Brake Set | M9220 4-Piston, Left & Right Brakes |
| Rotor | Qty 2 XTR Rotors of your choice (MT905 or CL900) |
| Brake Pads | 1x Pair P04C-MF Metal Pads (Installed), 1x Pair P03A-RF Resin Pads (packaged) |
| Oil: | Shimano Low Viscosity Mineral Oil |
| Bleed Kit: | Complimentary Shimano Professional Disc Brake Bleed Kit |
Brake
| 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 |
| Lever Mount: | 22.2mm Clamp |
| Shifter Mount: | I-Spec EV Compatible |
| Weight: | TBD |
6-Bolt Rotor
| Model: | RT-MT905 |
| Series | XTR M9100, M9200 |
| Hub Mount: | 6-Bolt |
| Sizes: | 180mm, 203mm |
Centerlock Rotor
| Model: | RT-CL900 |
| Series | XTR M9100, M9200 |
| Hub Mount: | Centerlock |
| Sizes: | 160mm, 180mm, 203mm |
Metal Brake Pads
| Model: | P04C-MF (Pre-Installed) |
| Compound: | Metal |
| Backing Plate: | Composite |
Resin Brake Pads
| Model: | P03A-RF (Included) |
| Compound: | Resin |
| Backing Plate: | Aluminum |
Bleed Kit
| Model: | TL-BR |
| Includes: | Syringe, road and mountain funnels, and four bleed blocks |
| Oil: | Shimano Low Viscosity Mineral Oil included - 100ml (Compatible only with M9200, M9220 brakes) |
Please reach out to us with any questions you may have on 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 will have an additional shipping fee.
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 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 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 have a $200 restocking fee and the customer pays for return shipping.
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 in your Account profile, or you can request that we email you the label.
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 we receive your returned item(s) and inspect the 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.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong products, 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:
