⟲ 360° — drag meThe facts.
| Part number | CY029 |
|---|---|
| Type | Radial brake master cylinder |
| Piston diameter | 19 mm |
| Pivot distance | 20 mm, fixed, not recommended for street use |
| Lever | Rigid (fixed), black, with relieving eyelet (RST), long or short |
| Body finish | Natural anodised |
| 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 CY029 takes Accossato's 19 mm dual-disc piston and pairs it with a 20 mm pivot rather than the more common 18 mm, which shortens the lever stroke needed to reach full braking force at the cost of requiring more hand strength; Accossato does not recommend this geometry for everyday street use. This listing is the natural anodised body, fitted with a rigid, fixed lever rather than a folding one.
Key Features
- 19 mm piston diameter for dual-disc front brake systems
- 20 mm lever pivot, giving a shorter, quicker stroke; not recommended for street use
- Rigid, fixed lever in black
- Natural anodised aluminium body, left in its machined finish
- 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 machines this body from aluminium and leaves it natural anodised, fitting a rigid lever on top rather than a folding one. Stainless steel screws, a zinc-plated bleed valve and Formula 1 compound seals are specified as on the rest of the range. An offset riser resists the body flexing under a hard stop, and the bore is shaped to shorten the lever's passive travel, the part of the pull before the pads bite, by more than half next to an ordinary radial unit.
A Sharper Pivot for Track Use
Moving the pivot out to 20 mm, instead of the 18 mm used on most of the range, reduces the lever stroke needed for full braking force but increases the hand strength required for the same result, which is why Accossato reserves this geometry for track and competition riding rather than the road. On this natural-finish CY029, both the long and short lever lengths are fitted with a relieving eyelet (RST). The relieving eyelet on both lever lengths means the long and short options differ only in reach, not in how the lever is built.
Fitment and Compatibility
65 motorcycles are confirmed for the CY029, the same sportbike-heavy list as Accossato's other 19 mm dual-disc cylinders, including the Aprilia RSV4 RR, BMW S1000RR, Ducati Panigale V4, Kawasaki ZX-10RR and Suzuki GSX-R1000R; full model years are in the Fitment tab. The same 19x20 fixed-lever cylinder is also sold separately with a nickel-plated body. Riders switching from the 18 mm fixed-pivot CY023 to this 20 mm unit should expect to apply noticeably more hand force for the same stopping power.
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 19x20 radial brake master cylinder with the rigid fixed lever in black, available long or short, both fitted with a relieving eyelet (RST), in the natural anodised 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.
Specifications
- Part number: CY029
- Type: Radial brake master cylinder
- Piston diameter: 19 mm
- Pivot distance: 20 mm, fixed, not recommended for street use
- Lever: Rigid (fixed), black, with relieving eyelet (RST), long or short
- Body finish: Natural anodised
- 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 FACTORY (2017–2023)
- 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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