⟲ 360° — drag meThe facts.
| Part number | PK038 |
|---|---|
| Type | Radial clutch master cylinder |
| Piston diameter | 19 mm |
| Pivot distance | 20 mm |
| Lever | Folding, long, with relieving eyelet (RST), 7 colours |
| Body | Forged aluminium, CNC-worked cover and lever |
| Hose thread | M10x1 |
| Brake light switch | Not included (ID001 or ID002 separately) |
| Reservoir | Integrated, colour-matched to lever, with oil level marker |
| Road approval | No German approval documented |
DescriptionThe whole story▼
The Accossato PK038 is a radial clutch master cylinder built with an integrated fluid reservoir, pairing a 19 mm piston with a fixed 20 mm lever pivot distance, the shortest-stroke setting in the clutch range. As on the brake side, Accossato does not recommend this pivot distance for everyday street use, positioning it instead for track and competition riding. The long folding lever, fitted with a relieving eyelet, is offered in seven colours.
Key Features
- 19 mm piston diameter
- Fixed 20 mm lever pivot distance, the shortest-stroke setting, not recommended for street use
- Integrated fluid reservoir with a colour-matched cover, adjusting knob and oil level marker
- Folding lever, long version, with relieving eyelet (RST), seven colours available
- Forged aluminium body with a CNC-worked cover and lever
- Offset riser that reduces bending of the master cylinder during gear changes
- Stainless steel mounting screws and a zinc-plated bleed valve
- Seals manufactured from Formula 1 compound material
Construction and Material Quality
The forged aluminium body with a CNC-worked cover and lever, stainless steel screws, zinc-plated bleed valve and Formula 1 compound seals match the specification used throughout the integrated-reservoir clutch range. The offset riser reduces flex of the unit while the gearbox is worked hard, and the passive lever stroke, cut by more than half against a conventional radial unit, is shortened further still by the 20 mm pivot geometry fitted to this version, the firmest setting Accossato offers on the clutch side.
The Firmest Clutch Pivot in the Range
Where some sibling clutch codes sit at the softer end of the pivot range with a 16 mm piston and a 16 or 18 mm distance, the PK038 moves to a larger 19 mm piston and a 20 mm pivot distance, the firmest, shortest-stroke combination in the clutch lineup. The same physical trade-off applies as on the brake side: the shorter stroke makes disengagement feel more immediate, but the same hand pressure then needs to work against more leverage, so the lever itself takes more effort to pull. Accossato suggests this combination mainly for riders already running the equivalent 19x20 brake setup who want a matched, firmer feel at both levers.
Fitment and Compatibility
Our fitment data confirms 59 motorcycles for this clutch master cylinder, including the BMW S1000RR (2009-2018), Ducati MULTISTRADA 1260 (2018-2020), Kawasaki NINJA H2 SX (2018-2021) and Suzuki GSX-S1000 (2015-2021), across Aprilia, BMW, Ducati, Honda, Kawasaki and Suzuki ranges. Full details for every confirmed model year are available in the Fitment tab on this page; please double-check them against your own vehicle before ordering.
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 PK038 radial clutch master cylinder with its integrated reservoir, fitted with a long folding lever and relieving eyelet (RST) in the colour selected, together with the mounting nut. Stainless steel mounting screws, the zinc-plated bleed valve and the Formula 1 compound seals are assembled on the unit. The stop light switch, available separately as ID001 or ID002, and the mirror holder, available separately as MH009 or MH010, are not included.
Specifications
- Part number: PK038
- Type: Radial clutch master cylinder
- Piston diameter: 19 mm
- Pivot distance: 20 mm
- Lever: Folding, long, with relieving eyelet (RST), 7 colours
- Body: Forged aluminium, CNC-worked cover and lever
- Hose thread: M10x1
- Brake light switch: Not included (ID001 or ID002 separately)
- Reservoir: Integrated, colour-matched to lever, with oil level marker
- Road approval: No German approval documented
FitmentWhich bikes this fits▼
- Aprilia DORSODURO 900 (2017–2019)
- Aprilia RS 660 (2021–2021)
- Aprilia RSV4 (2013–2015)
- Aprilia RSV4 FACTORY (2017–2021)
- Aprilia RSV4 R (2009–2019)
- Aprilia RSV4 RF (2015–2019)
- Aprilia RSV4 RR (2015–2019)
- Aprilia SHIVER 900 (2017–2019)
- Aprilia TUONO 660 (2021–2021)
- Aprilia TUONO V4 1100 (2015–2016)
- Aprilia TUONO V4 1100 FACTORY (2015–2020)
- Aprilia TUONO V4 1100 RR (2015–2018)
- BMW K 1300 R (2009–2016)
- BMW K 1300 S (2009–2015)
- BMW K1600 GT (2011–2017)
- BMW K1600 GTL (2011–2017)
- BMW M1000RR (2021–2021)
- BMW R NINET (2014–2016)
- BMW R1200R (2006–2015)
- BMW R18 (2020–2020)
- BMW S1000R (2014–2020)
- BMW S1000RR (2009–2018)
- Ducati DIAVEL (2011–2018)
- Ducati HYPERMOTARD 821 (2013–2016)
- Ducati Hyperstrada 821 (2013–2016)
- Ducati MONSTER 1200 (2014–2017)
- Ducati MONSTER 796 (2011–2016)
- Ducati MONSTER 797 (2017–2017)
- Ducati MULTISTRADA 1200 (2015–2020)
- Ducati MULTISTRADA 1260 (2018–2020)
- Ducati MULTISTRADA 950 (2017–2017)
- Ducati Panigale 1199 (2012–2015)
- Ducati Panigale 1299 (2015–2018)
- Ducati Panigale 899 (2014–2015)
- Ducati Panigale V4 (2018–2021)
- Ducati SCRAMBLER 1100 (2018–2020)
- Ducati STREETFIGHTER V4 (2020–2021)
- Ducati X DIAVEL (2016–2021)
- Honda CB1000R (2018–2020)
- Honda CBR 1000 RR (2008–2019)
- Honda GL1800 GOLD WING (2018–2018)
- Honda VFR1200F (2010–2016)
- Honda VFR800X Crossrunner (2015–2015)
- Kawasaki GTR 1400 (2014–2017)
- Kawasaki NINJA H2 (2017–2019)
- Kawasaki NINJA H2 SX (2018–2021)
- Kawasaki NINJA H2R (2015–2015)
- Kawasaki Z1000 (2010–2016)
- Kawasaki Z1000SX (2011–2019)
- Kawasaki Z900RS (2018–2020)
- Kawasaki ZX-10 R (2006–2021)
- Kawasaki ZX-10 RR (2016–2021)
- Kawasaki ZX-6R (2003–2016)
- Kawasaki ZZR1400 (2006–2016)
- Suzuki GSX-R 1000 (2003–2017)
- Suzuki GSX-R1000R (2017–2017)
- Suzuki GSX-S1000 (2015–2021)
- Suzuki GSX-S1000F (2015–2017)
- Suzuki GSX-S1000GT (2022–2022)
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