27W-3-789 10th Gen Civic Si Front Brake Pads

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These instructions reference "Left Hand" & "Right Hand" sides. Left Hand & Right Hand is always defined from the driver seat viewpoint

For rear pad check out this guide.

Raise the vehicle and support with jackstands in the OE recommended locations

Remove the front wheels/tires using your lug nut socket and breaker bar

The following instructions show the left-hand side removal of OE components and installation of 27WON replacement pads. The right-hand side is done with the same steps

Identify Components

Brake Caliper

Brake Caliper Bracket

Move to the back side of the caliper for the removal process

Using a 14mm socket and a 3/8" drive ratchet, remove the two caliper slider bolts circled in yellow

Remove the caliper from the rotor as shown

If the rotor is heavily worn, you may need to spread the brake pads apart to gain the clearance needed to remove the caliper

Do not let the caliper hang from the brake line, this could cause damage to the line or fittings. Set on top of rotor as shown

Remove brake pad retaining clip by pulling out as shown. Set aside, it's reused

Remove the outer brake pad. This will come straight out to the side as shown

Remove the inner brake pad. This will come straight out to the side as shown

Lay out your 27WON replacement pads to make sure you have the correct pads for each side. Note, you'll have four total pads. Only one side is shown here

Inner

Outer

Wear indicator location

Note, the wear indicator is only on the inner pad side

Follow Factory Service Manual (FSM) for proper maintenance of braking system

Worn/damaged rotors or calipers can cause brake system failure and premature pad wear. Make sure your brake system doesn't need the other components serviced

These parts are shown off of the vehicle, but can still be easily inspected without removing them

Verify the removed brake pads are worn even. Both ends of the pads should be roughly the same thickness. If your pads are wearing unevenly this could indicate a bad rotor or caliper. Your brake pads may look different than what's shown here

Inspect your rotors for any cracks or gouges. The contact surfaces of your rotors should be smooth and flat. Damaged or warped rotors will cause excessive brake pad wear

Rotors need to be a minimum thickness to be used. Consult FSM for this specification. Inspect the edge of your rotors for an excessive lip. A large lip on the edge of your rotor can be an indicator that it is time to replace the rotor

Inspect your calipers for any cracking or obvious leaks

Inspect your caliper piston boot for any rips or tears. This is may indicate that the caliper needs replaced

Note the location of the brake pad retaining hardware. This is reused

The top and bottom of the 27WON brake pads align into the groove of the brake pad retaining hardware as shown

Install the outer brake pad into the caliper bracket by aligning the top and bottom edges and pushing at an angle as shown

Repeat with the inner brake pad in the same way

Note the wear indicator at the top of the inner brake pad. Only the inner brake pads will have such indicators

Align the brake pad retaining clip in each brake pad and reinstall as shown

Using a C-clamp or a caliper compressing tool as shown, compress the caliper piston enough for the caliper to slide over the new pads

This step can be skipped if you already compressed the caliper or your OE pads were brand new

Slide the caliper over the 27WON brake pads and OE rotor as shown

Before proceeding, verify the brake pads are sitting in the caliper and caliper bracket as shown

Using a 14mm socket and a 3/8" ratchet, reinstall the caliper slider bolts as shown and torque to 25 Ft/lbs

This completes the Brake Pad installation for the left hand side of the vehicle. The right hand installation process is the same

Complete the right hand installation process starting on Step 3

Reinstall your wheels. Follow FSM for proper wheel lug nut torque. Lower your car back on the ground and proceed to bedding your new pads in following steps

This completes the installation of the 27WON brake pads - The following step provides instruction for Brake Pad Bedding

Brake pad bedding is an essential process to the life and durability of the brake pads and rotors - for optimal brake pad performance please follow the steps below

Proper pad bedding slowly heats and cools the rotors & pads - do not hard brake during initial driving until after complete bedding procedure is complete

Find an open road and accelerate to 30mph - Brake evenly and smoothly at ~50% effort until the vehicle is almost stopped, then accelerate to 30mph again

Repeat above step 8-10 times

Find an open road and accelerate to 50mph - Brake evenly and smoothly at ~80% effort until the vehicle is almost stopped, then accelerate to 50mph again

Repeat above step 2-3 times

Allow ~15min for brakes to cool - You can now use the brakes for normal driving

This completes the installation & setup of your 27WON Performance Front Brake Pads

We hope you were impressed with your 27WON experience and love your new brake pads for years to come. Email us at sales@27won.com or call us at 571-271-0271 with any questions or concerns

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