Triumph Spitfire Differential Gear and Crown Wheel and Pinion

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Part No.: GRID005732

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Fitted from mid 1973, actual change data not documented.
Cut to the original Hypoid specification. 

Stanpart Brand

Rimmer Bros resurrects the brand Stanpart under license from British Motor Heritage! Faithful to their reputation for exact fit and quality, our Stanpart products are manufactured exclusively for Rimmer Bros to the original specifications.
Qty Req-1, Model-Spitfire MkIV & 1500
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159801
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156903
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£7.71 ex VAT£9.25 inc UK VAT
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Cut to the original Hypoid specification.

Stanpart Brand

Rimmer Bros resurrects the brand Stanpart under license from British Motor Heritage!
Faithful to their reputation for exact fit and quality, our Stanpart products are manufactured exclusively for Rimmer Bros to the original specifications.
Qty Req-1, Model-Spitfire 1500
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159802
3 in stock
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£398.13 ex VAT£477.76 inc UK VAT
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Requires Solid Spacer 145933

159803 - Supplied with later fine spline pinion gear, when used for early GT6 / Vitesse applications. The later pinion flange is required to suit, please see part no. UKC764 (related items section)

Cut to the original Hypoid specification. 

Stanpart Brand

Rimmer Bros resurrects the brand Stanpart under license from British Motor Heritage! Faithful to their reputation for exact fit and quality, our Stanpart products are manufactured exclusively for Rimmer Bros to the original specifications.
Qty Req-1, Model-Spitfire 1500
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159803
4 in stock
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£374.79 ex VAT£449.75 inc UK VAT
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305778A
Usually in stock at our supplier, allow 1 week for delivery
£550.00 ex VAT£660.00 inc UK VAT
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104556
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5 out of 5 starsRead 1 Review(s)Rate and Review this Product
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ULC2445
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UKC169
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UKC169TIMKEN
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ATA7039
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UKC3948
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UKC3365
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114749
Out of stock, expected soon Aug 30, 2026. Add to cart and Back Order
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GHF333
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The Blackline helical LSD's are torque biasing, that is they distribute torque between the wheels, loading more torque towards the wheel with the best traction thus improving performance and driveability. Especially in low grip situations.

Fits:-
Triumph Spitfire
Triumph Vitesse
Triumph GT6
Triumph Herald
Triumph TR7 (4 speed)

Helical LSD Advantages:-
  • Equal rotational speed to both wheels
  • Torque distributed according to traction
  • Minimal service requirements - no clutches
  • Quick reaction compared to viscous LSDs
  • Gentle and progressive engagement, low noise
  • Easily controlled power take-off and drifting
  • Gears and body manufactured from 8620 alloy steel
  • Direct replacement into stock differential
The helical gearing manages the distribution of friction within the LSD. When torque is applied to the helical gear system it creates force that pushes the gear into the differential body, thus creating friction. Increases of torque, increases the thrust force directly proportional to the amount of torque. This allows the Blackline LSD to cope with considerable traction imbalance even under heavy power conditions, as would be the case on exiting a powered up corner.

But at low torque conditions the LSD can differentiate quietly and smoothly, thus making the differential very suitable for normal road driving.

The Blackline LSD uses the popular parallel axis helical geared configuration optimised for even load distribution. They are designed with a torque bias of 5:1 this means that if one wheel loses traction then the wheel with the most grip can receive five times as much torque as the wheel that is slipping. However, five times zero is still zero, so all these helical LSD's work best when both wheels are 'planted' and some traction is still available on the slipping wheel. In practice this is rarely a problem as there is always some 'drag' on the slipping wheel, however some drivers expertly use left foot braking to partially lock the spinning wheel.
Qty Req-1
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TT2425
3 in stock
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£463.96 ex VAT£556.75 inc UK VAT
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24 month warranty
Worldwide shipping
Price Match
Customer Comments
"Excellent service, I wouldn't use anyone else!" Customer Comment
Product Description

Triumph Spitfire Differential Gear and Crown Wheel and Pinion