⟲ 360° — drag meThe facts.
| Part number | CY042 |
|---|---|
| Type | Radial brake master cylinder |
| Piston diameter | 19 mm |
| Pivot distance | 18 mm |
| Lever | Revolution, black, length adjustable with inserts |
| Body finish | Black painted |
| Hose thread | M10x1 |
| Brake light switch | Not included (ID001 or ID002 separately) |
| Reservoir | Not included |
| Road approval | No German approval documented |
DescriptionThe whole story▼
The CY042 is Accossato's 19x18 radial brake master cylinder with a forged and painted body, and this listing is the black painted version. The 19 mm piston is sized for dual-disc front brakes, and the 18 mm pivot is a distance Accossato rates for track use while also recommending it for the road. Instead of the folding or fixed levers used on the unpainted range, this cylinder is fitted with a black Revolution lever, whose reach can be changed by adding or removing inserts.
Key Features
- 19 mm piston diameter for dual-disc front brake systems
- 18 mm lever pivot, for track use and also suited to the road
- Revolution lever in black, length adjustable by adding or removing inserts
- Forged and painted body in black
- CNC-machined, fully made in Italy
- Offset riser that limits body flex under hard braking
- Stainless steel mounting screws and a zinc-plated bleed valve
- Seals in Formula 1 compound material
Construction and Material Quality
Accossato forges this body in aluminium and then paints it black, a different finishing route to the natural anodised or nickel-plated bodies used on other versions of this cylinder. Stainless steel mounting screws, a zinc-plated bleed valve and Formula 1 compound seals go into the assembly regardless of body finish. An offset riser is built into the clamp to resist flexing under hard braking, and the bore is shaped so the lever's passive travel is reduced by more than half against an ordinary radial master cylinder.
Revolution Lever, Adjustable Reach
The Revolution lever fitted here works differently to the folding or fixed levers used elsewhere in Accossato's range: its length can be changed by adding or removing inserts at the pivot end, letting the rider bring the lever closer to the bar or push it further out without buying a separate short or long version. The lever stays black regardless of the colour chosen for the body. Because the lever length is set with inserts rather than a choice of parts, every CY042 ships as a single SKU per colour, with no separate long or short listing.
Fitment and Compatibility
65 motorcycles are confirmed for the CY042, including the Aprilia RSV4 R, BMW S1000RR, Ducati Panigale V4, Kawasaki ZX-10R and Suzuki GSX-S1000; the Fitment tab lists the complete range with model years. The same 19x18 cylinder with the Revolution lever is also sold in blue, green, red, silver and fluorescent yellow painted bodies as separate products.
Road Approval
This master cylinder is not supplied with German road-approval documentation; it is intended for track and competition use.
Scope of Delivery
The package includes the Accossato 19x18 radial brake master cylinder with the black Revolution lever, in the black painted body finish. Stainless steel mounting screws, the zinc-plated bleed valve and the Formula 1 compound seals are assembled on the unit. The brake light switch (ID001 or ID002) and the fluid reservoir are not included and are bought separately.
Specifications
- Part number: CY042
- Type: Radial brake master cylinder
- Piston diameter: 19 mm
- Pivot distance: 18 mm
- Lever: Revolution, black, length adjustable with inserts
- Body finish: Black painted
- Hose thread: M10x1
- Brake light switch: Not included (ID001 or ID002 separately)
- Reservoir: Not included
- Road approval: No German approval documented
DownloadsData sheet▼
FitmentWhich bikes this fits▼
- Aprilia DORSODURO 900 (2017–2019)
- Aprilia RS 660 (2021–2023)
- Aprilia RSV4 (2013–2015)
- Aprilia RSV4 1100 (2019–2023)
- Aprilia RSV4 R (2009–2023)
- Aprilia RSV4 RF (2015–2023)
- Aprilia RSV4 RR (2015–2019)
- Aprilia SHIVER 900 (2017–2020)
- Aprilia TUONO 660 (2021–2023)
- Aprilia TUONO V4 1100 (2015–2016)
- Aprilia TUONO V4 1100 FACTORY (2015–2020)
- Aprilia TUONO V4 1100 RR (2015–2018)
- BMW HP4 (2012–2014)
- BMW K 1300 R (2009–2016)
- BMW K 1300 S (2009–2015)
- BMW K1600 GT (2011–2023)
- BMW K1600 GTL (2011–2023)
- BMW M1000RR (2021–2023)
- BMW R NINET (2014–2016)
- BMW R1200R (2006–2015)
- BMW R18 (2020–2023)
- BMW S1000R (2014–2020)
- BMW S1000RR (2009–2023)
- Ducati DIAVEL (2011–2019)
- Ducati HYPERMOTARD 821 (2013–2016)
- Ducati Hyperstrada 821 (2013–2016)
- Ducati MONSTER 1200 (2014–2021)
- Ducati MONSTER 796 (2011–2016)
- Ducati MONSTER 797 (2017–2021)
- Ducati MULTISTRADA 1200 (2015–2020)
- Ducati MULTISTRADA 1260 (2018–2020)
- Ducati MULTISTRADA 950 (2017–2021)
- Ducati Panigale 1199 (2012–2017)
- Ducati Panigale 1299 (2015–2018)
- Ducati Panigale 899 (2014–2015)
- Ducati Panigale V4 (2018–2023)
- Ducati SCRAMBLER 1100 (2018–2023)
- Ducati STREETFIGHTER V4 (2020–2023)
- Ducati X DIAVEL (2016–2023)
- Honda CB1000R (2018–2023)
- Honda CBR 1000 RR (2008–2019)
- Honda GL1800 GOLD WING (2018–2023)
- Honda RC213V-S (2016–2018)
- Honda VFR1200F (2010–2016)
- Honda VFR800X Crossrunner (2015–2019)
- Kawasaki GTR 1400 (2014–2017)
- Kawasaki NINJA 1000 SX (2020–2023)
- Kawasaki NINJA H2 (2017–2023)
- Kawasaki NINJA H2 SX (2018–2023)
- Kawasaki NINJA H2R (2015–2023)
- Kawasaki Z1000 (2010–2023)
- Kawasaki Z1000R EDITION (2017–2020)
- Kawasaki Z1000SX (2011–2019)
- Kawasaki Z900RS (2018–2020)
- Kawasaki ZX-10 R (2006–2023)
- Kawasaki ZX-10 RR (2016–2023)
- Kawasaki ZX-6R (2003–2016)
- Kawasaki ZZR1400 (2006–2023)
- Suzuki GSX-R 1000 (2003–2023)
- Suzuki GSX-R 600 (2003–2023)
- Suzuki GSX-R 750 (2003–2023)
- Suzuki GSX-R1000R (2017–2023)
- Suzuki GSX-S1000 (2015–2023)
- Suzuki GSX-S1000F (2015–2023)
- Suzuki GSX-S1000GT (2022–2023)
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