Shop Genuine Girling brake shoes, calipers, master cylinders, stainless floating disc rotors, brake hoses and rear shocks for classic Triumph, Norton Commando and BSA motorcycles. Girling was the original-equipment supplier of rear suspension units on most British bikes of the era. Each listing shows model-year fitment, original part numbers and, for shocks, length and spring rate. We offer free shipping to the lower 48 states.
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Girling: A British Brake and Suspension Name Since 1925
Girling dates to 1925, when Captain Albert H. Girling patented a wedge-actuated mechanical drum brake. New Hudson Ltd of Birmingham bought the patent in 1929 (Hemmings; Wikipedia: New Hudson). Joseph Lucas Ltd took over Girling brake production in 1938 and bought the patent in 1943. Lucas then combined its Bendix brake and Luvax shock-absorber businesses into a new company, Girling Ltd (Grace’s Guide). Girling Ltd was based at King’s Road, Tyseley, Birmingham, and made brakes and dampers (Grace’s Guide).
Girling disc brakes were first raced on the 1952 BRM Type 15 Grand Prix car. In 1957 they became standard equipment on the Triumph TR3, the first mass-produced sports car with front disc brakes (Hemmings). On motorcycles, most British bikes left the factory with Girling rear shocks (Bike Revival). Today’s Girling Classic range is designed to match the original Girling brake and suspension products (Lucas Classic Motorcycle).
Girling Rear Shocks for Triumph, BSA & Norton
Our Girling rear shocks come in three eye-to-eye lengths, in open-chrome and shrouded styles:
12.4-inch shocks
- Triumph TR6, TR7, T120, T140 and BSA A65/A70, 100 lb, 1971–80 (TBS-50320)
- Triumph T100 1969–74 and TR6/T120 1969–70, 145 lb (TBS-50321)
- Triumph 6T, TR6, T120 shrouded, 145 lb, 1963–68 (TBS-50322)
12.9-inch shocks
- Triumph TR25W 1969–70 and BSA 1969–73, 100 lb (TBS-50323)
- Triumph and BSA open chrome, 110 lb (TBS-50324)
- Norton Commando 750/850 MK1/MK2 1971–74, 126 lb (TBS-50325)
- Triumph, BSA and Norton shrouded, 110 lb, 1954–68 (TBS-50326)
13.4-inch shocks
- BSA A50/A65 open chrome, 110 lb, 1969–70 (TBS-50327)
- BSA A75 triple, 126 lb, 1969–72 (TBS-50328)
- BSA A50/A65 shrouded, 110 lb, 1962–68 (TBS-50329)
These lengths and spring rates match the Girling Classic shock specifications listed by Lucas Classic Motorcycle. To compare other rear suspension options, see Hagon shocks or browse Triumph suspension, Norton suspension and BSA suspension. For fitting and shock-spring work, see our suspension tools.
Girling Disc Brake Parts for Triumph 750 Twins & Triples
For Triumph TR7, T140, T150 and T160 disc-brake models, we stock:
- Front master cylinder assembly, 1973–78 (60-4102G)
- Rear master cylinder assembly, 1975–82 (60-4401G)
- AP Type 2 alloy brake caliper (60-4101)
- Caliper rebuild kit (99-7006 G)
- Master cylinder service kit (99-2768G)
- Stainless floating disc rotor (37-4275G)
- Brake hoses: upper front, US-spec 1973–78 (60-4176G); lower front (60-4175G); 7-inch European low bar (60-4177 G); 8-inch rear master cylinder to caliper (60-4617G); and 21.5-inch rear for late disc models (60-7233)
- Reservoir parts, including bodies, caps, diaphragms and O-rings, plus the chrome front brake lever blade (60-4206G) and the T140E alloy clutch lever blade (97-7035 G)
For more Triumph braking parts from all brands, see Triumph brakes.
Girling Brake Parts for Norton Commando
For the Norton Commando 750 and 850, we carry:
- Stainless floating disc rotor (06-1885 G)
- Caliper seal rebuild kit, 1972–75 (06-4243G)
- Front master cylinder service kit (06-4244G)
- Complete service kit with boot, circlip and diaphragm (06-4244G-KIT)
- 1975 MK3 rear master cylinder assembly (06-5776)
- MK3 reservoir cap (60-4365G / 06-5740)
- Commando and Atlas rear brake shoe set (06-0828 G / 06-3417 G)
For more Norton braking parts, see Norton brakes.
Girling Drum Brake Shoes for Triumph & BSA
Girling brake shoe pairs for drum-brake Triumph and BSA models:
- Triumph/BSA 500 and 650 1968-on twins, front (37-1996 G)
- Triumph/BSA 8-inch front conical hub, 1971–73 (37-3713G)
- Triumph/BSA oil-in-frame conical hub, rear (37-3925 G)
- Triumph/BSA rear (37-1406 G)
- BSA A50/A65 1966–68 and B44VS 1968–70, 8-inch single-sided front (68-5541G)
- BSA 7-inch single-sided front and QD rear hubs (65-5901G)
- Triumph Tiger Cub and BSA Bantam, 1959–67: standard (37-0977G) and waterproof grooved-lining (37-0977GG) pairs
See also BSA brakes and our wheel and brake tools.
How to Choose the Correct Girling Part
Check these before you order:
- Model and year. Fitment often changes between years within the same model family.
- Front or rear. Brake shoes, hoses and master cylinders are specific to their position.
- Hub type and size. Single-sided, conical or QD hubs, and 7-inch or 8-inch drums, take different shoes.
- Hose length and market. US-spec and European low-bar hoses are different lengths.
- Shock length, spring rate and style. Match the eye-to-eye length (12.4, 12.9 or 13.4 inches), the spring rate (100–145 lb) and open or shrouded style.
- Original part number. Each listing shows the factory part number alongside the Girling reference.
To confirm original part numbers, see our Triumph parts books, Norton parts books, BSA parts books and workshop manuals. If you’re still unsure, contact us with your model, year and frame number.
Shop Genuine Girling Parts
Browse the Girling range above for brake and suspension parts for your classic Triumph, Norton or BSA. We offer free shipping to the lower 48 states. See our shipping and returns policy, or browse all supplier brands, including Lucas electrical, Girling’s former parent company.
Girling Brakes & Shocks FAQ
What Girling parts does The Bonneville Shop sell?
We sell Genuine Girling brake shoes, disc calipers and caliper rebuild kits, front and rear master cylinders and service kits, stainless floating disc rotors, brake hoses, reservoir parts, lever blades and rear shocks for classic Triumph, Norton and BSA motorcycles.
Who makes Girling parts?
Girling started in 1925 with Albert H. Girling’s patented drum brake. It became Girling Ltd under Joseph Lucas in 1943 (Grace’s Guide). Today’s Girling Classic motorcycle range is designed to match the original Girling brake and suspension products (Lucas Classic Motorcycle).
Were Girling shocks original equipment on British motorcycles?
Yes. Most British motorcycles of the classic era left the factory with Girling rear shocks (Bike Revival).
Which Girling shocks fit a Norton Commando?
For the 1971–74 Norton Commando 750/850 MK1 and MK2, we list the 12.9-inch open-chrome Girling shock with a 126 lb spring (TBS-50325).
Which Girling shocks fit a Triumph T140 or TR7?
For the 1971–80 Triumph TR6, TR7, T120 and T140 (and BSA A65/A70), we list the 12.4-inch Girling shock with a 100 lb spring (TBS-50320).
How do I choose the right Girling shock length and spring rate?
Measure eye-to-eye (center of the top mounting eye to center of the bottom eye) and match it to 12.4, 12.9 or 13.4 inches. Then choose the spring rate (100, 110, 126 or 145 lb) and the open or shrouded style listed for your model and year.
Do you sell Girling caliper and master cylinder rebuild kits?
Yes. We stock the Triumph T140/TR7 caliper rebuild kit (99-7006 G), the Norton Commando caliper seal kit (06-4243G), and master cylinder service kits for Triumph and Norton.
Which Girling brake shoes fit my Triumph or BSA?
It depends on the hub. We list separate shoe pairs for 7-inch and 8-inch single-sided hubs, 8-inch conical front hubs, oil-in-frame conical rear hubs, QD rear hubs, and Tiger Cub/Bantam hubs. Match the hub type and year shown on each listing.
Do you ship Girling parts for free?
Yes. We offer free shipping to the lower 48 US states. See our shipping and returns policy for details.
Browse all brands we carry, click here.