Hope RX4+ SL FM+20 brake caliper, Black, DOT version

HOPE RX4+ SL FM+20 gravel brake caliper

Black / DOT
145,00 €
145,00 €
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Hope RX4+ SL FM+20 brake caliper, Black, DOT version
  • Hope RX4+ SL FM+20 brake caliper, Black, DOT version
HOPE RX4+ SL FM+20 gravel brake caliper

HOPE RX4+ SL FM+20 gravel brake caliper

145,00 €
145,00 €

Caliper only, fitted to the hose of your levers: DOT for SRAM, mineral for Shimano and Campagnolo. At the rear, 20 mm more rotor without an adapter.

ColourBlack
Brake fluid
Pairs well with
  • HOPE RX CENTER LOCK road and gravel brake rotor 110,00 €
  • HOPE RX4+ SL FMF+20 gravel front brake caliper 145,00 €
On order +5–8 days

On order

Lead time for this item: 5–8 days before shipping, while it reaches our workshop.

How it works

This item is not in stock at the workshop. You order and pay for it like an item in stock, and we order it straight away from our supplier.

Lead time

The lead time shown runs until the item reaches our workshop. We check it, then ship it with the usual delivery. The lead time is shown again in your cart and at checkout.

Mixed cart

If your order also contains items in stock, we wait for the item on order so we can send everything in one go.

Delays

If a supplier cannot meet the stated lead time, we let you know. You can then wait or cancel your order and get a refund.

    Key features

    Étrier de frein Hope RX4+ SL FM+20, Noir, version DOT

    On a 140/160 rear flat mount frame, it takes a 160 mm rotor directly, and a 180 mm on a 160/180 frame. No adapter bracket between caliper and frame.

    Étrier de frein Hope RX4+ SL FM+20, Rouge, photo Hope

    DOT version for SRAM levers, mineral version for Shimano and Campagnolo. A D or an M engraved on the bore cap shows which one is fitted.

    Étrier de frein Hope RX4+ SL FM+20, Noir, version minérale

    The bleed screw takes its design from the RX2 and accepts the SRAM fitting as well as Hope's own. The caliper's dedicated bleed block is in the box.

    Spec sheet

    ModelHope RX4+ SL FM+20, brake caliper only
    UseGravel · cyclo-cross · road, hydraulic drop-bar levers
    MountingFlat Mount +20, 34 mm bolt spacing, no adapter
    Rear rotor140/160 flat mount frame: 160 mm · 160/180 frame: 180 mm
    Front rotorOnly on a 160/180 flat mount fork with through-bolts: 180 mm
    CaliperMonobloc, CNC-machined 2014 T6 aluminium
    Pistons4, phenolic resin: 2 × 14 mm and 2 × 16 mm
    PadsHBSP323, top loading
    BleedingBleed screw compatible with SRAM or Hope fittings · Hope syringe sold separately
    Mounting bolts2 × M5, not supplied, 7 to 8 mm engaged in the caliper, 8 N·m
    Compatible Hope mountsFlat Mount X, Y and Z
    WeightNot published by Hope
    Warranty2 years · spare parts for at least 10 years after the end of production

    Fluid and levers

    DOTMineral
    FluidDOT 4 or DOT 5.1 onlyMineral oil only: Shimano for Shimano, Campagnolo or Magura for Campagnolo
    Compatible levers (Hope list)SRAM Red eTap AXS, Red, Force eTap AXS, Force, Rival eTap AXS, Rival, Apex, S900Shimano Dura Ace Di2 R9270, R9170, R9120, R9200 · Ultegra Di2 R8170, R8100, R8070, R8020 · 105 Di2 R7170, R7020, Di2 R785, RS685 · GRX RX820, RX810, RX600, RX400, RX815 Di2, RX817 Di2 · Campagnolo Ekar, Super Record, Record, H11
    Caliper markingD engraved on the bore capM engraved on the bore cap, red O-rings
    Hope part numberHBSPC107HBSPC103

    In the box

    • Complete brake caliper
    • Hydraulic fittings for the lever hose: copper washer, brass insert and olive, cover
    • Two sets of pads: blue for road, red for gravel and cyclo-cross
    • Caliper-specific bleed block

    Lever, hose, mounting bolts and rotor not supplied. Never mix DOT and mineral oil: any fluid other than the caliper's own causes brake failure.

    Description

    The Hope RX4+ SL FM+20 is a caliper only: no lever, no hose, no mounting bolts. It connects to the hose of your road or gravel levers with the supplied Hope fittings, and those levers dictate the version: DOT for SRAM, mineral for Shimano and Campagnolo.

    The point is the +20. On a rear flat mount frame designed for 140 and 160 mm, it takes a 160 mm rotor directly, with no adapter, and a 180 mm rotor on a 160/180 frame.

    Those 10 mm of radius act as a lever arm: for the same effort, braking torque rises by more than 14% compared with a 140 mm rotor. Plan on M5 bolts of the right length, since 7 to 8 mm must go into the caliper and the mount varies from one frame to another. For the front, see the RX4+ SL FMF+20.

    For 2026, Hope has refined its bore cap to fit more frames. MAAKE offers it to fit four pistons behind the levers you already have.

    Shipping and payment

    Shipping

    To France, Europe and a selection of countries worldwide, home delivery with Colissimo or Chronopost, Mondial Relay pick-up points for small items. Shipping costs are shown at checkout. Every order is checked and packed in our Montpellier workshop.

    All about shipping

    Payment

    Card, Apple Pay, Google Pay, PayPal and PayPal Pay in 4. Secure payment: MAAKE never stores your card details.

    Payment and financing

    Returns

    14 days after delivery to change your mind. Returns and withdrawal

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