Made for a perfect fit, the BT Moto velocity stacks have a relief notches at the bottom of each funnel to ensure tight fitment while also being easy to install. These are plug-and-play and require no additional modifications to your airbox to fit. Simply unscrew your factory velocity stacks and screw ours in. Coupled with our engineered flash, the combination makes an extremely easy install and tune that can be done in your own garage.

2024-2025 BMW R 1300, Stage 1 PURCHASE REQUIRED FOR STAGE 2

TO SEE STAGE 1, CLICK HERE

Coming from our Stage 1 upgrade of more power with better rideability, Stage 2 offers so much more! Our custom velocity stacks and revised tuning for the OEM widebands (on applicable models) not only gives a dramatic power increase but also overall better and more consistent rideability. Our easy to install custom velocity stacks don't shift the powerband over and decrease power down low. We managed to make more power everywhere, as we know these bikes aren't for racing or staying high in the RPM band. Careful consideration was taken in every aspect of Stage 2 to fit the bikes application and riding style.

WHAT STAGE 2 INCLUDES

• BT Moto velocity stack kit (install video below)
• FTCL (full-time closed loop) lambda targeting enabled for all applicable models. This self-tuning feature is our most popular feature for BMW Motorcycles
• Correct fueling on both banks for BT Moto Velocity Stacks
• Decel fueling and engine braking changed for smoother throttle on/off transitions
• More precise throttle inputs while still allowing mode based changes by the ECU
• Smoother quickshifter that removes the OEM jerky feeling from shifting up and down
• Power increased over the entire RPM band, from low RPM to redline (dyno sheets below)
• Per gear torque restrictions removed
• Knock control adjustment for max power
• STAGE 2 INCLUDES ALL FEATURES FROM STAGE 1

BT MOTO VELOCITY STACKS

3D printed from lightweight composite, the BT Moto Velocity Stacks have been carefully engineered and designed to maximize power in the higher RPM range while not losing power in the low RPM range.

**NOTE: FINAL PRODUCTION COLOR MAY VARY**

DYNO

BT MOTO STAGE 2, 91 Pump Gas + Velocity Stacks: 154whp / 117wtq

Stock Tuning, 93 Pump Gas:  132whp / 106wtq

Below is our Stage 2 flash vs stock, with and without aftermarket velocity stacks. You can see significant gains across the entire RPM band, especially up top where we gained over 30whp. All on pump gas 93. Same day testing on the same bike.Graph  (Factory Stock vs Stage 2 with Velocity Stacks): 

RESOURCES / DOWNLOADS

VIDEOS

How To Install BMW R 1250 Stack Kit