Bleeding the Brakes on a 2013 Triumph Daytona 675
Shop parts for a 2013 Triumph Daytona 675 Motorcycle.
The 2013 Triumph Daytona 675 stops on hydraulic disc brakes at both ends. A handlebar-mounted master cylinder feeds the front calipers through braided-style lines, and a pedal-mounted master cylinder does the same for the single rear caliper. Some 2013 Daytona 675s were delivered with ABS, which adds a modulator into the hydraulic circuit between the master cylinders and the calipers. If your bike carries that module, a normal fluid flush at the calipers still works exactly as described here — what changes is how you handle air that has made its way into the modulator itself, and that situation is addressed near the end of this article.
Bleeding is a straightforward job, but it rewards patience. The goal is simple: push fresh fluid through the system from the reservoir down to each caliper, carrying trapped air out ahead of it, and never let the reservoir pull itself dry along the way.
Reading the Symptoms Before You Start
A brake lever that feels soft, mushy, or that travels noticeably closer to the grip than it used to is the classic sign that air is in the system. The same goes for a rear pedal with excess travel or a spongy feel underfoot. Air compresses; brake fluid does not, so any cushion in the lever is fluid that is not doing its job.
Fluid condition matters too. Pull the reservoir cap and look at what is inside. Fresh fluid is clear and pale. Fluid that has gone dark, cloudy, or gritty has absorbed moisture and picked up contamination, and it should be replaced whether or not the lever feels off. Brake fluid is hygroscopic, meaning it draws water out of the air over time, and that water lowers the fluid's boiling point. On a bike like the Daytona 675, which is happy to be ridden hard, boiled fluid turns to vapor in the caliper and the lever goes long at exactly the wrong moment.
Any job that opened the hydraulic system is also grounds for a bleed: new lines, a caliper rebuild, master cylinder service, or a reservoir that ran low. If you have just replaced pads and simply pushed the pistons back, a quick bleed is cheap insurance.
Tools and Supplies to Have Ready
- Fresh brake fluid of the type printed on your master cylinder reservoir cap, from a sealed container. Do not substitute a different specification, and do not use a bottle that has been open and sitting on a shelf.
- A box-end wrench that fits the bleeder valve on each caliper. A box-end grips the flats fully and is far less likely to round the bleeder than an open-end.
- A length of clear tubing that fits snugly over the bleeder nipple, long enough to reach your catch bottle.
- A clear catch bottle, so you can watch the fluid come out.
- Rags or shop towels, plus a syringe or turkey baster for pulling old fluid out of the reservoir.
- The correct driver for the reservoir cap screws.
- Optional but genuinely helpful: a one-way check-valve bleeder or a vacuum bleeder, either of which makes a solo job much less fiddly.
Setting Up the Bike and Protecting the Finish
Get the Daytona 675 upright and stable on a stand before you touch anything. On the front circuit, turn the handlebars so the reservoir sits level — a tilted reservoir will spill the moment the cap comes off. Drape rags over the tank, the upper fairing, the instrument cluster, and anything else below the reservoir, because brake fluid attacks paint and clear plastic on contact. If a drop lands where it should not, wipe it up immediately and rinse the area with water rather than waiting until the end of the job.
Work in a well-ventilated space and keep the fluid container capped whenever you are not pouring from it. Fluid left open absorbs moisture from the air, which defeats the purpose of the flush.
The Bleeding Procedure, Step by Step
- Remove the reservoir cap and diaphragm. Use the syringe or baster to draw most of the old fluid out of the reservoir, leaving the bottom covered so no air is introduced at the master cylinder.
- Refill the reservoir with fresh fluid from your sealed container. Keep it well above the minimum line for now.
- Slip the clear tubing over the bleeder valve and route the other end into the catch bottle, with the bottle positioned so the tubing runs upward or level rather than looping down and back up.
- If your bike has two front calipers, plan to bleed them one at a time, and start with the caliper farthest from the master cylinder in terms of hydraulic path. Finish the closer caliper second.
- Squeeze the front lever slowly and hold it against the grip. On the rear, press and hold the pedal. Hold steady pressure — do not pump rapidly.
- With the lever or pedal held, open the bleeder about a quarter turn. Fluid and any trapped air will push out through the tubing. Watch the tube, not the reservoir.
- Close the bleeder fully before you release the lever or pedal. Releasing with the bleeder open draws air straight back into the caliper, which is the single most common way a home bleed goes wrong.
- Release the lever or pedal, then top the reservoir back up to just below the full mark. Check it after every few cycles — if it ever runs dry, you have just pulled air into the master cylinder and you are starting over.
- Repeat the squeeze, hold, open, close, release cycle until the fluid arriving in the catch bottle is clean and free of bubbles, and the lever or pedal feels firm rather than spongy.
- Move to the next caliper if there is one, and repeat the same sequence with a fresh top-off at the reservoir.
Finishing Up and Checking Your Work
When the fluid runs clean and bubble-free, close the bleeder snugly with the box-end wrench. Snug is the target — firm enough to seal, not so tight that you crush the seat or strip the valve. Wipe the caliper area dry and look for any weeping at the bleeder and at the banjo fitting where the line meets the caliper.
Top the reservoir to the correct level marking, reinstall the diaphragm and cap, and wipe down the reservoir and surrounding bodywork. Then squeeze the lever firmly and hold it for a slow count of ten. It should feel solid and should not creep toward the grip. Do the same with the rear pedal.
Testing Before You Ride Normally
Spin each wheel by hand and listen. The wheel should turn freely with a faint pad rub at most; a wheel that stops quickly or drags means something is overfilled, misaligned, or the caliper is not releasing. Then, in a safe open area at walking pace, apply the front brake, then the rear, then both together. Feel for a firm, consistent response and confirm the bike stops straight. Only after that should you ride at normal speeds, and even then, give the new fluid a few easy stops to settle in.
When the Job Belongs in a Shop
If the lever will not firm up after several honest bleeding attempts, or if it firms only after a few pumps and then fades again, air is still getting in somewhere — often past a worn master cylinder seal or a loose fitting. Persistent bubbles that never stop, or fluid weeping from the master cylinder or a caliper, are the same signal. Stop and have the system inspected.
ABS-equipped 2013 Daytona 675s deserve one specific caution. If the reservoir ran dry, or if the ABS unit or its lines were disconnected, air may be sitting inside the modulator where a caliper bleed cannot reach it. That typically requires a dealer-level procedure or diagnostic tool to cycle the pump and purge the unit. Do not attempt to improvise a sequence. Take the bike to a shop, and let them finish the job properly.
Related Shopping Categories
Shop Brake Fluid for a 2013 Triumph Daytona 675 Motorcycle.
Shop Brake Lines for a 2013 Triumph Daytona 675 Motorcycle.
Shop Brake Pads for a 2013 Triumph Daytona 675 Motorcycle.
Shop Stands for a 2013 Triumph Daytona 675 Motorcycle.
Shop Brake Tools for a 2013 Triumph Daytona 675 Motorcycle.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.
