Replacement Gearbox Head Assembly for TTBCP33-4 Brushcutter (26mm / 7-Tooth Spline).
Restore smooth drive transmission and strong cutting torque to your line trimmer or metal blade with a replacement angle gearbox head assembly. Specifically designed for the TTBCP33-4 33cc Straight Shaft Petrol Brushcutter, this quality non-OEM gearbox comes complete with clamping spacers and a retaining nut for an immediate, hassle-free repair.
Quality Non-OEM Replacement |
Free Delivery to All UK Postcodes |
Dispatched Fast
Petrol brushcutters operate at high rotational speeds under significant torsional vibration while clearing tough scrub, nettles, brambles, and thick vegetation. The lower bevel gearbox absorbs the brunt of this force, transferring drive torque from the spinning internal shaft to the cutting head. Over extended operation, grease breakdown, abrasive dirt ingress, or sudden blade strikes against hidden rocks can strip the internal bevel gears, damage bearings, or shear the threaded output arbor. Sized to match a 26mm shaft tube with a 7-tooth spline (26*7T), this durable alloy gearbox slides onto the lower drive shaft cleanly. Supplied with upper and lower adapter flanges and a reverse-thread locking nut, it eliminates shaft play and restores reliable cutting rotation.
26mm Tube • 7-Tooth Spline
Engineered with a 26mm collar bore and a 7-spline female drive connection to match TTBCP33-4 straight shaft petrol brushcutters.
Hardware Kit Included
Supplied complete with the necessary thrust washer, rider cup, and reverse-thread arbor locking nut (561g total) for immediate blade or bump-feed installation.
Important Fitment & Non-OEM Information:
Titan Pro is an independent supplier of non-OEM replacement parts sourced to help you maintain your garden machinery affordably. We are not the manufacturer of the original equipment and cannot provide technical advice on servicing or machine maintenance.
Please check your shaft dimensions before ordering: Measure the outer diameter of your aluminum shaft tube (must be 26mm) and count the teeth on the end of your solid internal drive shaft (must be 7 teeth / 7T). External styling and casing color may vary slightly depending on production runs.
| Model Suitability |
TTBCP33-4 33cc Straight Shaft Petrol Brushcutter |
| Component Type |
Bevel Gearbox Head Assembly |
| Shaft Tube Diameter |
26mm (Collar Bore) |
| Drive Shaft Spline |
7-Tooth Spline (7T) |
| Included Hardware |
Spacers / Flange Plates & Reverse-Thread Lock Nut |
| Housing Material / Colour |
Die-Cast Alloy (Silver Finish) |
| Component Weight |
Approx. 561g |
| Condition |
Brand New Non-OEM Replacement |
| Quantity Supplied |
1 Complete Gearbox Assembly with Fixings |
Douglas Mcmillan - 26/06/2026 
Verified
Purchased product
Excellent service. Easy to purchase and delivered on time.
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Lucy Baggot - 31/08/2025 Verified
Titan strimmer gearbox
Great product quick delivery and well packaged - 5
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David Black - 15/08/2025 Verified
Parts
Very good service and great to get parts for the striimming machine
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