RRA Parts - GearMaster - Aqua Division

14/06/2026

As every year, this gearbox came back for its annual inspection and L*D check-up.

Regular maintenance and preventive servicing are a big part of why this transmission has been performing reliably for many years, both on the street and at the drag strip.

This time, a few additional changes were made to prepare it for the next stage of the project – a turbo setup.

What makes this build special to me is that I'm not only working for a customer, but also for a friend. Kristopher is one of the few people who truly understands every mechanical aspect of his car. His attention to detail, dedication, and willingness to keep improving the setup are reflected in the impressive results he has achieved in naturally aspirated drag racing over the years.

It's always a pleasure to see him, exchange ideas, and discuss the technical side of motorsport with someone who understands and appreciates the details as much as I do.

Thank you for your continued trust, Kristopher. I wish you the best of luck with this new chapter of the build, and I'm looking forward to seeing what the turbo setup will achieve.

Turbo season is coming. 👌

05/06/2026

Honda Integra DC5 Type R Gearbox Rebuild – Serial No. 83

This transmission arrived with no 2nd gear engagement.

After complete disassembly, the damage was far more extensive than expected:

⚠️ Missing teeth on the 2nd gear pair

⚠️ Cracked early-style 5th/6th synchro hub assembly

⚠️ Worn 2nd gear synchro sleeve set

⚠️ Significant wear on 6th gear engagement teeth

To restore the gearbox properly, the following components were replaced:

✅ All bearings and oil seals

✅ All needle bearings and needle bearing races

✅ Complete shift fork set

✅ Complete synchro sleeve set:
• 1st/2nd
• 3rd/4th
• 5th/6th

✅ 1st gear

✅ 2nd gear

✅ 6th gear

✅ Shift arm

✅ 2nd gear friction damper

The L*D differential was fully disassembled, inspected, cleaned and reassembled.

Every clearance, preload and specification was checked during assembly to ensure long-term reliability.

This gearbox is a perfect example of why a transmission should always be fully inspected before estimating the final repair cost. What initially appeared to be a missing 2nd gear turned into a major rebuild involving a significant number of OEM Honda components.

🇯🇵 Honda Integra DC5 Type R

🔧 Complete transmission rebuild

⚙️ Genuine Honda OEM parts

📍 RRA GearMaster

Built With Precision

04/06/2026

Honda Accord Euro-R CL7 K20A gearbox with OEM L*D.

This gearbox was brought in for inspection during a clutch replacement.

Overall, the gearbox was in very good condition. During inspection, one differential bearing was replaced. It appeared that the differential bearing cover had been damaged during a previous driveshaft seal replacement.

The clutch release fork set was also replaced.

The entire gearbox was thoroughly cleaned and inspected before reassembly.

During assembly and measurement, it became clear that two shims needed to be replaced and readjusted to bring all clearances back within specification.

Another rare OEM L*D CL7 gearbox checked, serviced and ready for many more kilometers.

31/05/2026

NPQ3 gearbox from a K20A2 Type-R.

It's been a long time since I've seen a gearbox this dirty — both inside and out.

An incredible amount of parts had to be replaced to bring it back to proper condition. During the rebuild, we also added an MFactory L*D and a long 6th gear for more comfortable cruising.

Another Type-R gearbox saved and ready for many more miles.

30/05/2026

A nice reunion yesterday!

Marcel stopped by for a gearbox repair. I think it has been five or six years since we last saw each other — maybe even longer.

The original plan was simply to replace the mainshaft, as the splines on the old one were heavily worn. Unfortunately, once the gearbox was opened and inspected, it became clear that several additional components also needed to be replaced to ensure everything would function properly and reliably again.

These are exactly the kinds of situations where a proper inspection pays off — sometimes the visible damage is only part of the story.

On a personal note, it was great to see Marcel again after all these years and catch up. Thanks for trusting me with the job!

16/05/2026

16/05/2026

Complete transformation inside and out ✨🔧
Full engine block with cylinder head and components after AquaBlasting, bringing everything back to a clean fresh finish.
And that’s not all — the matching gearbox has already received a complete professional rebuild + AquaBlast treatment as well ⚙️
Clean on the outside, precise on the inside. That’s how we do it at RRA GearMaster / RRA Aqua Division 👌🔥

07/05/2026

30 years of dirt, oil and grime?
No problem 💪

This engine block was professionally cleaned in my basket washing machine — fast, safe and without damaging the aluminium surface.

Do you also have parts that need professional cleaning?
Feel free to contact me 📩

RRA Parts / RRA GearMaster / RRA Aqua Division
📧 [email protected]
📞 +31 615 070 662

29/03/2026

MFactory V3 Metal Plate L*D for K-series — first time on my bench 🔧

Unboxed and fully disassembled to see exactly what’s inside — no theory, no comparisons, just a raw mechanical look.

If you’ve never had one in your hands, this shows what you actually get and how it’s built.

Sometimes the best way is simply to open it up and check everything yourself.

RRA GearMaster — BUILD WITH PRECISION

03/03/2026

🔧 TECHNICAL ISSUE – NO WORKING TOLERANCE 🔧

New parts.
Fresh assembly.
Zero functional clearance.

Required axial clearance: approx. 0.20 mm.
Measured result: −0.056 mm.

📏 Measurements (maximum values from 3 points):

Gear 2: 14.796 mm
Gear 3: 18.071 mm
Total stack: 32.867 mm

2–3 Hub: 32.811 mm

Result: interference instead of clearance.
The gears bind due to negative axial clearance.

The manufacturer stated that the parts are within factory tolerance.
After sending detailed measurements and three follow-up emails, no further response was received.

Gearbox assembly is currently on hold.
The only solution at this point is precision machining of brand-new parts at the client’s own expense.

This is not an opinion.
These are measured numbers.

In performance builds, “within tolerance” on paper does not always mean functional in reality.

Measure everything.