PRODUCT DETAILS
Clutch Masters Hydraulic Throwout Bearing (N817-H) - B-Series Twin & Triple Disc
Multi-disc clutches hold enormous power and they're famously unpleasant in traffic. The pedal is heavy, engagement is abrupt, and a twin or triple disc setup can turn a fun car into one you'd rather not drive to work. This hydraulic bearing fixes a lot of that. It replaces the mechanical release system with a hydraulic one, which softens pedal effort and makes engagement considerably more consistent.
It Makes A Multi-Disc Clutch Livable
This is the practical reason to fit one, and it's a real change rather than a marginal improvement.
A conventional release system uses a clutch fork pivoting on a ball, pushing a release bearing. That's several moving parts, each with its own friction and wear, all in the path between your foot and the pressure plate. On a clutch with the clamping force of a twin or triple disc, that adds up to a heavy pedal.
Hydraulic release removes the fork, the pivot ball, and the conventional bearing entirely. Fluid pressure acts directly on the pressure plate, which means softer pedal effort and more consistent pressure through the whole travel.
What you feel is a clutch you can modulate rather than one you're fighting. That matters in traffic, and it matters at the track where clutch control is part of driving well.
Fewer Parts To Wear Out
The other advantage, and it's worth understanding.
Every component in a mechanical release system is something that wears. The pivot ball wears, the fork wears at its contact points, the bearing wears. On a high clamping force clutch those parts work considerably harder than they were designed to.
A hydraulic bearing eliminates them. Fewer moving parts means fewer things to fail and fewer sources of the vague, inconsistent pedal feel that develops as a mechanical system ages.
Smoother Engagement, Less Drivetrain Shock
Consistent pressure through the pedal travel means you can actually feather the clutch rather than getting an on-off engagement.
That's kinder to everything downstream. Abrupt engagement sends shock through the transmission, axles, and differential, and on a car making the power that justifies a triple disc, that shock is genuinely destructive over time. Smoother engagement means less of it.
For Twin And Triple Disc Applications
Worth being clear about what this is for.
This is designed to work with Clutch Masters twin and triple disc clutch kits. It's not a general purpose upgrade for a single disc setup, and the benefit is specific to the high clamping forces a multi-disc clutch produces.
If you're running or planning a twin or triple disc on a B-series, this is the piece that makes it something you can live with rather than something you tolerate.
Fitment
1994-2001 Acura Integra
1999-2000 Honda Civic Si
1994-1997 Honda Del Sol VTEC
B-series hydraulic transmission, manual only. Part number N817-H. For use with Clutch Masters twin or triple disc clutch kits.
Who Should Run This
This is for the builder running a multi-disc clutch who wants the car to still be drivable, and for anyone planning one who'd rather sort the release system properly from the start. You get lighter pedal effort, consistent engagement, and fewer parts to wear out, on a setup that's otherwise known for being hard work. Fit it with the clutch and enjoy a car you can actually use.
Fits: 1994-2001 Acura Integra, 1999-2000 Honda Civic Si, 1994-1997 Honda Del Sol VTEC with B-series hydraulic transmission. Part number: N817-H. For use with: Clutch Masters twin and triple disc clutch kits. Replaces: clutch fork, pivot ball, and conventional release bearing. Benefits: softer pedal effort, consistent engagement pressure, reduced drivetrain shock.
1994-2001 Acura Integra
1999-2000 Honda Civic Si
1994-1997 Honda Del Sol VTEC