XYZ Racing Hollow Rear Brake Kit — Bmw 5 SERIES E 61 525 (2004-2010)

The E61 Touring puts more weight over its rear axle than the E60 saloon it shares a platform with. The load bay, the heavy tailgate, and the self-levelling rear air suspension all sit aft of the rear wheels, so under repeated braking the rear discs work harder than most owners expect. The factory rear setup starts to feel vague when you use an estate this capable the way it invites – loaded, fast, and over long descents.

This XYZ Racing rear big brake kit for the BMW 5 Series E61 525 is built specifically for that rear axle – a pair of left and right rear calipers and two-piece floating discs. The discs trim rotating and unsprung mass at the back, sharpening rear braking response and holding their bite when the heat climbs on a loaded motorway run or a repeated-stop B-road.

What this big brake kit does for your 2004-2010 BMW 5 Series E61 525

The clearest gain is pedal consistency from the rear axle. Where the standard 525 rear discs soften as temperature builds, the vented two-piece rotor sheds heat faster and stores less of it, so the back of the car settles sooner after each stop and stays predictable on a long descent with the boot loaded. The reduced rotating mass also takes a small but real bite out of unsprung weight at the rear, which helps the air-sprung tail track bumps more cleanly. Three pad compounds – Street, Sport and Racing – let you set rear bite to suit a daily Touring, a fast-road car or the occasional track day, braided lines firm up the pedal, and caliper colour can be matched to your wheels with painted Red, Yellow, Gold, Black and Anodized Black finishes included at no extra cost.

About the Hollow Rear Brake Kit

This is a rear-axle-specific kit, not a generic four-corner package adapted to fit. The two-piece floating disc is the centrepiece: a vented friction ring on an alloy bell with a lightened structure that lowers thermal mass and speeds cooling between stops, which is what keeps a heavy estate rear end consistent under load. The system ships with a choice of three pad compounds – Street for road use, Sport for harder fast-road driving and occasional track days, and Racing for circuit work – so the rear braking character is set by the buyer rather than fixed. Discs come drilled or slotted at the same price, and the caliper body is hollow-cast as standard, with a Hollow Racing upgrade for serious track use that drops the dust cover for a 1000C rating and a two-year warranty. Beyond the included painted colours, you can specify Custom Color in any Pantone for £150, premium polished-forged Titanium, Polished Gold and Polished Silver, or candy Teal, Blue, Red and Orange, and centre bells can be upgraded to two-tone anodized in five colours or to titanium. Every component is dimensioned for the E61’s rear hub, disc diameter and caliper mounting, so it bolts to the existing rear architecture of the 525.

Fitment for the BMW 5 Series E61 525 (2004-2010)

This kit is fitted to the rear axle of the BMW 5 Series E61 525, chassis code E61, across the 2004 to 2010 model years. It is a rear-position kit only and is sized to the E61 525’s rear hub and caliper mounting. Confirm your build year falls within the 2004-2010 span before configuring.

What buyers also search for

• BMW 5 Series E61 525 rear big brake kit for a loaded, heat-tolerant Touring
• BMW E61 525 two-piece floating disc upgrade to cut rotating mass at the back axle
• 5 Series E61 rear brake kit with Street, Sport or Racing pad compounds
• BMW E61 525 rear caliper colour options in Red, Yellow, Gold, Black or Anodized Black
• Rear-specific big brake upgrade for the 2004-2010 BMW 5 Series Touring

Choose your pad compound, disc style and caliper colour above and configure your E61 525 rear kit when you order.