Doesn’t matter if you’re threading the needle, splitting lanes on the 405 in LA or leisurely riding the backroads of Tennessee: your bike needs GOOD brakes, no question about it.
Now, whether that means completely upgrading to the best performing setup on the market, or simply equipping your OE brakes with better friction and rotors is up to your personal financial situation—so for this go ‘round, let’s take the lower road to stepping up the braking game on your typical 2019-2024 FXLRS (though the same process can be applied to most any later-model Harley).
Simply put, off the showroom floor the Lowrider S/ST rear brake has much, much more to be desired for. Along with a need for smaller-bore master cylinder (such as a 13mm Brembo, down from the stock 5/8), the geometry of the brake pedal doesn’t allow quite enough foot leverage to achieve sufficient clamping power without having to come up off the seat. Fortunately, that latter issue is solvable with an adjustable connecting rod (such as the one from FXR Division currently in use) and/or an adjustable brake pedal.
The FLXR’s stock front brakes, on the other hand, work exceptionally well. But with nearly 20k miles on the clock, the front pads were about expired—no better time than now to upgrade them with not only GBrakes’s 1370 HH-rated (aggressive road use) sintered friction (both front and rear), but also their 11.8 front and 11.5-inch rear Wave rotors (PN DF835CW / DF681CW).
And since the wheels were coming off, I also took advantage of the situation—rather, had Anthony at V-Twin Now—swap out the stock hollow axles for a set of Bareknuckle Performance’s “unbreakable” 17-4 front and 630 rear stainless-steel axles to complete the rolling stock component upgrade perfectly.
Updating our FXLRS braking system with GBrake’s 11.8/11.5 Wave floating rotors and their sintered HH-rated brake pads.
Additionally, while we realized it “mid-install”, we’ll also be upgrading the OE hollow axles with Bareknuckle Performance sold stainless axles front and rear.
Anthony from V-Twin Now was gracious enough to lend a dealership service experienced hand for our Saturday afternoon brake/axle swap.
With the wheel removed (calipers left attached), the stock front brake rotor removed (threads chased for remaining thread compound), and bearings inspected, the new 11.8-inch GBrakes is installed (preferably using new hardware, however we’d just recently upgraded the rotor bolts). Torque to 16-24 ft-lb with Red Loctite.
The calipers are still pressured up;
using a non-marring tool,
compress the caliper piston in preparation of installing the new brake pads,
which will require more room to fit onto the rotor due to the additional friction material.
With the new braking components in place, we swapped out the previously installed OE axle with the aforementioned 17-4 stainless steel axle from Bareknuckle Performance, which was generously coated with antiseize (including the threads to avoid galling the receiving end left side lower fork leg).
To torque the axle down (75 ft-lb) before securing the fork lower you’ll need a 5/8-inch crows foot, as shown. Not a bad idea to run a thin layer of tape over the end of the axle to prevent scratching!
When removing the Softail’s rear wheel, the caliper assembly must be unbolted first. Inspect bearings, sprocket, etc. You know the drill.
Same procedure for the rear (11.5-inch) GBrake’s rotor: chase wheel threads, add Red Loctite (with fresh hardware if possible), torque to 16-24 ft-lbs).
We still had a bit of meat left on the rear friction … but not a whole lot. And unlike the fronts,
the OE rear pads use an anti-rattle shim (note the tabs), which you may or may not choose to use; we did.
After the wheel is set/squared in the swing arm with the chain (or belt) tension set,
the BP axle nut is torqued to 105 ft-lb. Both wheels are spun to ensure even contact of the new GBrake pads and rotors.
Then, a quick rip around the neighborhood to test and subsequently bed (break in) the new friction. Rotors are checked for uneven wear marks and any adjustments made if necessary. Now we can ride with not only the added peace of mind knowing we’ve got sufficiently improved braking, but that we’ve also got the absolute strongest axles on the market under our ass!
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