Larger Front Rotor Mass
Larger Ø290 mm rotor mass adds thermal capacity for repeated stops on descents and trails.

Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
For Your Every Summer RSVP, with Code: SUMMER15
1998-2026 Suzuki Jimny WD4 Direct-Mount Front Big Brake KitDirect Mount Series Front Axle 4 Piston 1998 2026 Suzuki Jimny WD4 Direct Mount Front Big Brake Kit The TTSPORT Suzuki Jimny Front Big Brake Kit is a Direct Mount Series upgrade built around the WD4 forged 4 piston caliper, a 290 mm 22 mm internally vented rotor, and vehicle specific stainless braided lines. It is engineered to restore front axle braking authority on Jimnys running heavier wheels, tires, bumpers, and trail gear that the factory brake
Direct-Mount Series · Front Axle · 4-Piston
The TTSPORT Suzuki Jimny Front Big Brake Kit is a Direct-Mount Series upgrade built around the WD4 forged 4-piston caliper, a Ø290 mm × 22 mm internally vented rotor, and vehicle-specific stainless braided lines. It is engineered to restore front-axle braking authority on Jimnys running heavier wheels, tires, bumpers, and trail gear that the factory brake was never sized for.
Larger Ø290 mm rotor mass adds thermal capacity for repeated stops on descents and trails.
WD4 forged 4-piston caliper with 38 mm pistons and 45.4 cm² total piston area per caliper.
Direct-mount design bolts to the factory front knuckle with no adapter stack.
Stainless braided lines reduce hose expansion for a firmer pedal.
Designed to clear 15 in or larger wheels with proper spoke geometry and 71 mm minimum spoke clearance.
Configured for Suzuki Jimny JB23 / JB33 / JB43 / JB53 / JB64W / JB74W / JC74W front-axle applications.
| Brake Caliper | |
|---|---|
| Series | Direct-Mount Series |
| Model / Application | WD4 |
| Axle Position | Front |
| Piston Count | 4-piston |
| Piston Type | Aluminum-alloy pistons without dust boots |
| Piston Diameter | 38 mm × 4 |
| Caliper Dimensions | L 213 mm × W 117 mm × H 92 mm |
| Total Piston Area | 45.4 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 2.15 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 15 in or larger |
| Recommended Rotor Size | Ø290 mm × 22 mm |
| Brake Rotor | |
| Rotor Material | Heat-treated high-carbon cast iron |
| Axle Position | Front |
| Rotor Dimensions | Ø290 mm × 22 mm |
| Construction | One-piece rotor |
| Ventilation | Internally vented |
| Rotor Mounting | Fixed |
| Directional Design | Yes — left/right specific |
| Rotor Face Pattern | Curved slot / Grain Slot |
| Brake Pads | |
| Compatible Rotor Material | Iron / steel rotors only |
| Operating Temperature Range | 0–600 °C |
| Average Friction Coefficient | Average μ: 0.38; variation depends on temperature, line pressure, and rotor condition |
| Lines | |
| Brake Line Construction | Three-layer reinforced construction |
| Brake Line Material | PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Brake Line Fittings | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
| Vehicle Application & Rotor Mapping | |
| 1998-2018 Suzuki Jimny (JB23 / JB33 / JB43 / JB53) | Front · Ø290 mm × 22 mm |
| 2018-2026 Suzuki Jimny (JB64W / JB74W) | Front · Ø290 mm × 22 mm |
| 2023-2026 Suzuki Jimny 5-Door (JC74W) | Front · Ø290 mm × 22 mm |
| Fitment & Installation | |
| Primary Vehicle Application | Suzuki Jimny |
| Model Years & Chassis Codes | 1998-2018 JB23 / JB33 / JB43 / JB53 · 2018-2026 JB64W / JB74W · 2023-2026 JC74W |
| Axle | Front |
| Caliper Mounting Type | Direct mount |
| Minimum Wheel Size | 15 in or larger |
| Minimum Spoke Clearance | 71 mm |
| Brake Line Fitting Type | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
| Order Verification | Confirm chassis code, wheel clearance, current front hub, ABS sensor configuration, and brake-line fitting style before ordering |
| Bedding-In Procedure | Required |
Minimum spoke clearance: 71 mm. Wheel fitment depends on spoke shape, offset, and hub-face geometry — not just wheel diameter. Confirm clearance before ordering.
2 × WD4 forged 4-piston front calipers, left/right specific.
Brake pads for both front calipers, rated 0–600 °C and intended for iron / steel rotors.
2 × Ø290 mm × 22 mm one-piece internally vented front rotors, curved slot / Grain Slot, and left/right specific.
2 × three-layer stainless-steel braided front brake lines with vehicle-specific fittings.
Vehicle-specific mounting hardware for direct-mount Suzuki Jimny front-axle installation.
WD4 is a Direct-Mount front kit. Caliper brackets and rotor hats are not used on this configuration.
To avoid fitment issues, confirm chassis code, wheel diameter, spoke clearance, current front hub, ABS sensor configuration, and brake-line fitting style before purchase.
15 in or larger wheels are required.
Minimum spoke clearance: 71 mm.
Confirm Suzuki Jimny chassis code: JB23 / JB33 / JB43 / JB53 / JB64W / JB74W / JC74W.
Wheel fitment depends on spoke shape, offset, and hub-face geometry — not just wheel diameter. Confirm clearance before ordering.
Yes. This WD4 Direct-Mount front kit is configured for Suzuki Jimny chassis codes JB23, JB33, JB43, JB53, JB64W, JB74W, and JC74W. Confirm your exact chassis code, front hub, ABS sensor configuration, wheel size, and brake-line fitting style before ordering.
15 in or larger wheels are required, with at least 71 mm minimum spoke clearance to the front caliper. Wheel diameter alone is not enough; spoke shape, offset, hub-face geometry, and inner barrel profile must be checked before ordering.
Supported front applications include 1998-2018 Suzuki Jimny JB23, JB33, JB43, and JB53; 2018-2026 Suzuki Jimny JB64W and JB74W; and 2023-2026 Suzuki Jimny 5-Door JC74W.
This is a front-axle kit using Ø290 mm × 22 mm one-piece, internally vented, fixed, left/right directional front rotors with a Curved slot / Grain Slot face pattern.
No. This is a Direct-Mount Series WD4 application with direct-mount front calipers and one-piece front rotors. Caliper brackets and rotor hats are not used on this configuration.
No. The WD4 front calipers use aluminum-alloy pistons without dust boots. Inspect and clean the piston area during regular service, especially after mud, dust, water crossings, off-road use, or salted-road driving.
The kit includes two WD4 forged 4-piston front calipers, brake pads for both front calipers, two Ø290 mm × 22 mm one-piece vented directional front rotors, stainless-steel braided brake hoses, and vehicle-specific mounting hardware for direct-mount installation.
Yes. A proper bedding-in procedure is required to transfer pad material evenly to the rotor face and reach stable braking performance before aggressive use.
Need fitment confirmation, custom caliper color, or a quote?